Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed GenTraversableOnce
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed GenTraversableOnce
.
The element type of the resulting Chain
is the most specific superclass encompassing the element types of this Chain
and the passed GenTraversableOnce
.
the element type of the returned Chain
the GenTraversableOnce
to append
a new Chain
that contains all the elements of this Chain
followed by all elements of other
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Every
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Every
.
The element type of the resulting Chain
is the most specific superclass encompassing the element types of this Chain
and the passed Every
.
the element type of the returned Chain
the Every
to append
a new Chain
that contains all the elements of this Chain
followed by all elements of other
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Chain
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Chain
.
The element type of the resulting Chain
is the most specific superclass encompassing the element types of this and the passed Chain
.
the element type of the returned Chain
the Chain
to append
a new Chain
that contains all the elements of this Chain
followed by all elements of other
.
Returns a new Chain
with the given element prepended.
Returns a new Chain
with the given element prepended.
Note that :-ending operators are right associative. A mnemonic for +:
vs. :+
is: the COLon goes on the COLlection side.
the element to prepend to this Chain
a new Chain
consisting of element
followed by all elements of this Chain
.
Fold left: applies a binary operator to a start value, z
, and all elements of this Chain
, going left to right.
Fold left: applies a binary operator to a start value, z
, and all elements of this Chain
, going left to right.
Note: /:
is alternate syntax for the foldLeft
method; z
/:
chain
is the
same as chain
foldLeft
z
.
the result of the binary operator
the start value
the binary operator
the result of inserting op
between consecutive elements of this Chain
, going left to right, with the start value,
z
, on the left:
op(...op(op(z, x_1), x_2), ..., x_n)where x_{1}, ..., x_{n} are the elements of this
Chain
.Returns a new Chain
with the given element appended.
Returns a new Chain
with the given element appended.
Note a mnemonic for +:
vs. :+
is: the COLon goes on the COLlection side.
the element to append to this Chain
a new Chain
consisting of all elements of this Chain
followed by element
.
Adds an element to the beginning of this Chain
.
Adds an element to the beginning of this Chain
.
Note that :-ending operators are right associative. A mnemonic for +:
vs. :+
is: the COLon goes on the COLlection side.
the element to prepend to this Chain
a Chain
that contains element
as first element and that continues with this Chain
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed GenTraversableOnce
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed GenTraversableOnce
.
The element type of the resulting Chain
is the most specific superclass encompassing the element types of this Chain
and the passed GenTraversableOnce
.
the element type of the returned Chain
the GenTraversableOnce
to append
a new Chain
that contains all the elements of this Chain
followed by all elements of other
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Every
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Every
.
The element type of the resulting Chain
is the most specific superclass encompassing the element types of this and the passed Every
.
the element type of the returned Chain
the Every
to append
a new Chain
that contains all the elements of this Chain
followed by all elements of other
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Chain
.
Returns a new Chain
containing the elements of this Chain
followed by the elements of the passed Chain
.
The element type of the resulting Chain
is the most specific superclass encompassing the element types of this and the passed Chain
.
the element type of the returned Chain
the Chain
to append
a new Chain
that contains all the elements of this Chain
followed by all elements of other
.
Fold right: applies a binary operator to all elements of this Chain
and a start value, going right to left.
Fold right: applies a binary operator to all elements of this Chain
and a start value, going right to left.
Note: :\
is alternate syntax for the foldRight
method; chain
:\
z
is the same
as chain
foldRight
z
.
the result of the binary operator
the start value
the binary operator
the result of inserting op
between consecutive elements of this Chain
, going right to left, with the start value,
z
, on the right:
op(x_1, op(x_2, ... op(x_n, z)...))where x_{1}, ..., x_{n} are the elements of this
Chain
.Appends all elements of this Chain
to a string builder using start, end, and separator strings.
Appends all elements of this Chain
to a string builder using start, end, and separator strings. The written text will consist of a concatenation of
the string start
; the result of invoking toString
on all elements of this Chain
,
separated by the string sep
; and the string end
the string builder to which elements will be appended
the ending string
the separator string
the string builder, sb
, to which elements were appended.
Appends all elements of this Chain
to a string builder using a separator string.
Appends all elements of this Chain
to a string builder using a separator string. The written text will consist of a concatenation of the
result of invoking toString
on of every element of this Chain
, separated by the string sep
.
the string builder to which elements will be appended
the separator string
the string builder, sb
, to which elements were appended.
Appends all elements of this Chain
to a string builder.
Appends all elements of this Chain
to a string builder. The written text will consist of a concatenation of the result of invoking toString
on of every element of this Chain
, without any separator string.
the string builder to which elements will be appended
the string builder, sb
, to which elements were appended.
Selects an element by its index in the Chain
.
Selects an element by its index in the Chain
.
the element of this Chain
at index idx
, where 0 indicates the first element.
Finds the first element of this Chain
for which the given partial function is defined, if any, and applies the partial function to it.
Finds the first element of this Chain
for which the given partial function is defined, if any, and applies the partial function to it.
the partial function
an Option
containing pf
applied to the first element for which it is defined, or None
if
the partial function was not defined for any element.
Indicates whether this Chain
contains a given value as an element.
Indicates whether this Chain
contains a given value as an element.
the element to look for
true if this Chain
has an element that is equal (as determined by ==)
to elem
, false otherwise.
Indicates whether this Chain
contains a given Chain
as a slice.
Indicates whether this Chain
contains a given Chain
as a slice.
the Chain
slice to look for
true if this Chain
contains a slice with the same elements as that
, otherwise false
.
Indicates whether this Chain
contains a given Every
as a slice.
Indicates whether this Chain
contains a given Every
as a slice.
the Every
slice to look for
true if this Chain
contains a slice with the same elements as that
, otherwise false
.
Indicates whether this Chain
contains a given GenSeq
as a slice.
Indicates whether this Chain
contains a given GenSeq
as a slice.
the GenSeq
slice to look for
true if this Chain
contains a slice with the same elements as that
, otherwise false
.
Copies values of this Chain
to an array.
Copies values of this Chain
to an array. Fills the given array arr
with at most len
elements of this Chain
, beginning at
index start
. Copying will stop once either the end of the current Chain
is reached, the end of the array is reached, or
len
elements have been copied.
the array to fill
the starting index
the maximum number of elements to copy
Copies values of this Chain
to an array.
Copies values of this Chain
to an array. Fills the given array arr
with values of this Chain
, beginning at
index start
. Copying will stop once either the end of the current Chain
is reached, or the end of the array is reached.
the array to fill
the starting index
Copies values of this Chain
to an array.
Copies values of this Chain
to an array. Fills the given array arr
with values of this Chain
. Copying
will stop once either the end of the current Chain
is reached, or the end of the array is reached.
the array to fill
Copies all elements of this Chain
to a buffer.
Copies all elements of this Chain
to a buffer.
the buffer to which elements are copied
Indicates whether every element of this Chain
relates to the corresponding element of a given Chain
by satisfying a given predicate.
Indicates whether every element of this Chain
relates to the corresponding element of a given Chain
by satisfying a given predicate.
the type of the elements of that
the Chain
to compare for correspondence
the predicate, which relates elements from this and the passed Chain
true if this and the passed Chain
have the same length and p(x, y)
is true
for all corresponding elements x
of this Chain
and y
of that, otherwise false
.
Indicates whether every element of this Chain
relates to the corresponding element of a given Every
by satisfying a given predicate.
Indicates whether every element of this Chain
relates to the corresponding element of a given Every
by satisfying a given predicate.
the type of the elements of that
the Every
to compare for correspondence
the predicate, which relates elements from this Chain
and the passed Every
true if this Chain
and the passed Every
have the same length and p(x, y)
is true
for all corresponding elements x
of this Chain
and y
of that, otherwise false
.
Indicates whether every element of this Chain
relates to the corresponding element of a given GenSeq
by satisfying a given predicate.
Indicates whether every element of this Chain
relates to the corresponding element of a given GenSeq
by satisfying a given predicate.
the type of the elements of that
the GenSeq
to compare for correspondence
the predicate, which relates elements from this Chain
and the passed GenSeq
true if this Chain
and the passed GenSeq
have the same length and p(x, y)
is true
for all corresponding elements x
of this Chain
and y
of that, otherwise false
.
Counts the number of elements in this Chain
that satisfy a predicate.
Counts the number of elements in this Chain
that satisfy a predicate.
the predicate used to test elements.
the number of elements satisfying the predicate p
.
Builds a new Chain
from this Chain
without any duplicate elements.
Builds a new Chain
from this Chain
without any duplicate elements.
A new Chain
that contains the first occurrence of every element of this Chain
.
Indicates whether this Chain
ends with the given Chain
.
Indicates whether this Chain
ends with the given Chain
.
the Chain
to test
true
if this Chain
has that
as a suffix, false
otherwise.
Indicates whether this Chain
ends with the given Every
.
Indicates whether this Chain
ends with the given Every
.
the Every
to test
true
if this Chain
has that
as a suffix, false
otherwise.
Indicates whether this Chain
ends with the given GenSeq
.
Indicates whether this Chain
ends with the given GenSeq
.
the sequence to test
true
if this Chain
has that
as a suffix, false
otherwise.
Indicates whether a predicate holds for at least one of the elements of this Chain
.
Indicates whether a predicate holds for at least one of the elements of this Chain
.
true
if the given predicate p
holds for some of the elements of this Chain
, otherwise false
.
Finds the first element of this Chain
that satisfies the given predicate, if any.
Finds the first element of this Chain
that satisfies the given predicate, if any.
the predicate used to test elements
an Some
containing the first element in this Chain
that satisfies p
, or None
if none exists.
Builds a new Chain
by applying a function to all elements of this Chain
and using the elements of the resulting Chain
s.
Builds a new Chain
by applying a function to all elements of this Chain
and using the elements of the resulting Chain
s.
the element type of the returned Chain
the function to apply to each element.
a new Chain
containing elements obtained by applying the given function f
to each element of this Chain
and concatenating
the elements of resulting Chain
s.
Converts this Chain
of Chain
s into a Chain
formed by the elements of the nested Chain
s.
Converts this Chain
of Chain
s into a Chain
formed by the elements of the nested Chain
s.
Note: You cannot use this flatten
method on a Chain
that contains a GenTraversableOnce
s, because
if all the nested GenTraversableOnce
s were empty, you'd end up with an empty Chain
.
a new Chain
resulting from concatenating all nested Chain
s.
Folds the elements of this Chain
using the specified associative binary operator.
Folds the elements of this Chain
using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
a type parameter for the binary operator, a supertype of T.
a neutral element for the fold operation; may be added to the result an arbitrary number of
times, and must not change the result (e.g., Nil
for list concatenation,
0 for addition, or 1 for multiplication.)
a binary operator that must be associative
the result of applying fold operator op
between all the elements and z
Applies a binary operator to a start value and all elements of this Chain
, going left to right.
Applies a binary operator to a start value and all elements of this Chain
, going left to right.
the result type of the binary operator.
the start value.
the binary operator.
the result of inserting op
between consecutive elements of this Chain
, going left to right, with the start value,
z
, on the left:
op(...op(op(z, x_1), x_2), ..., x_n)where x_{1}, ..., x_{n} are the elements of this
Chain
.Applies a binary operator to all elements of this Chain
and a start value, going right to left.
Applies a binary operator to all elements of this Chain
and a start value, going right to left.
the result of the binary operator
the start value
the binary operator
the result of inserting op
between consecutive elements of this Chain
, going right to left, with the start value,
z
, on the right:
op(x_1, op(x_2, ... op(x_n, z)...))where x_{1}, ..., x_{n} are the elements of this
Chain
.Indicates whether a predicate holds for all elements of this Chain
.
Indicates whether a predicate holds for all elements of this Chain
.
the predicate used to test elements.
true
if the given predicate p
holds for all elements of this Chain
, otherwise false
.
Applies a function f
to all elements of this Chain
.
Applies a function f
to all elements of this Chain
.
the function that is applied for its side-effect to every element. The result of function f
is discarded.
Partitions this Chain
into a map of Chain
s according to some discriminator function.
Partitions this Chain
into a map of Chain
s according to some discriminator function.
the type of keys returned by the discriminator function.
the discriminator function.
A map from keys to Chain
s such that the following invariant holds:
(chain.toList partition f)(k) = xs filter (x => f(x) == k)That is, every key
k
is bound to a Chain
of those elements x
for which f(x)
equals k
.Partitions elements into fixed size Chain
s.
Partitions elements into fixed size Chain
s.
the number of elements per group
An iterator producing Chain
s of size size
, except the last will be truncated if the elements don't divide evenly.
Returns true
to indicate this Chain
has a definite size, since all Chain
s are strict collections.
Returns true
to indicate this Chain
has a definite size, since all Chain
s are strict collections.
Selects the first element of this Chain
.
Selects the first element of this Chain
.
the first element of this Chain
.
Selects the first element of this Chain
and returns it wrapped in a Some
.
Selects the first element of this Chain
and returns it wrapped in a Some
.
the first element of this Chain
, wrapped in a Some
.
Finds index of first occurrence of some value in this Chain
after or at some start index.
Finds index of first occurrence of some value in this Chain
after or at some start index.
the element value to search for.
the start index
the index >=
from
of the first element of this Chain
that is equal (as determined by ==
) to elem
,
or -1
, if none exists.
Finds index of first occurrence of some value in this Chain
.
Finds index of first occurrence of some value in this Chain
.
the element value to search for.
the index of the first element of this Chain
that is equal (as determined by ==
) to elem
,
or -1
, if none exists.
Finds first index after or at a start index where this Chain
contains a given Chain
as a slice.
Finds first index after or at a start index where this Chain
contains a given Chain
as a slice.
the Chain
defining the slice to look for
the start index
the first index >=
from
such that the elements of this Chain
starting at this index match the elements of
Chain
that
, or -1
of no such subsequence exists.
Finds first index after or at a start index where this Chain
contains a given Every
as a slice.
Finds first index after or at a start index where this Chain
contains a given Every
as a slice.
the Every
defining the slice to look for
the start index
the first index >=
from
such that the elements of this Chain
starting at this index match the elements of
Every
that
, or -1
of no such subsequence exists.
Finds first index where this Chain
contains a given Chain
as a slice.
Finds first index where this Chain
contains a given Chain
as a slice.
the Chain
defining the slice to look for
the first index such that the elements of this Chain
starting at this index match the elements of
Chain
that
, or -1
of no such subsequence exists.
Finds first index where this Chain
contains a given Every
as a slice.
Finds first index where this Chain
contains a given Every
as a slice.
the Every
defining the slice to look for
the first index such that the elements of this Chain
starting at this index match the elements of
Every
that
, or -1
of no such subsequence exists.
Finds first index after or at a start index where this Chain
contains a given GenSeq
as a slice.
Finds first index after or at a start index where this Chain
contains a given GenSeq
as a slice.
the GenSeq
defining the slice to look for
the start index
the first index >=
from
at which the elements of this Chain
starting at that index match the elements of
GenSeq
that
, or -1
of no such subsequence exists.
Finds first index where this Chain
contains a given GenSeq
as a slice.
Finds first index where this Chain
contains a given GenSeq
as a slice.
the GenSeq
defining the slice to look for
the first index at which the elements of this Chain
starting at that index match the elements of
GenSeq
that
, or -1
of no such subsequence exists.
Finds index of the first element satisfying some predicate after or at some start index.
Finds index of the first element satisfying some predicate after or at some start index.
the predicate used to test elements.
the start index
the index >=
from
of the first element of this Chain
that satisfies the predicate p
,
or -1
, if none exists.
Finds index of the first element satisfying some predicate.
Finds index of the first element satisfying some predicate.
the predicate used to test elements.
the index of the first element of this Chain
that satisfies the predicate p
,
or -1
, if none exists.
Produces the range of all indices of this Chain
.
Produces the range of all indices of this Chain
.
a Range
value from 0
to one less than the length of this Chain
.
Tests whether this Chain
contains given index.
Tests whether this Chain
contains given index.
the index to test
true if this Chain
contains an element at position idx
, false
otherwise.
Returns false
to indicate this Chain
, like all Chain
s, is non-empty.
Returns false
to indicate this Chain
, like all Chain
s, is non-empty.
returns
false
final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
final
def
isTraversableAgain: Boolean
Returns
true
to indicate this Chain
, like all Chain
s, can be traversed repeatedly.
Returns true
to indicate this Chain
, like all Chain
s, can be traversed repeatedly.
true
Creates and returns a new iterator over all elements contained in this Chain
.
Creates and returns a new iterator over all elements contained in this Chain
.
the new iterator
Selects the last element of this Chain
.
Selects the last element of this Chain
.
the last element of this Chain
.
Finds the index of the last occurrence of some value in this Chain
before or at a given end
index.
Finds the index of the last occurrence of some value in this Chain
before or at a given end
index.
the element value to search for.
the end index.
the index >=
end
of the last element of this Chain
that is equal (as determined by ==
)
to elem
, or -1
, if none exists.
Finds the index of the last occurrence of some value in this Chain
.
Finds the index of the last occurrence of some value in this Chain
.
the element value to search for.
the index of the last element of this Chain
that is equal (as determined by ==
) to elem
,
or -1
, if none exists.
Finds the last index before or at a given end index where this Chain
contains a given Chain
as a slice.
Finds the last index before or at a given end index where this Chain
contains a given Chain
as a slice.
the Chain
defining the slice to look for
the end index
the last index >=
end
at which the elements of this Chain
starting at that index match the elements of
Chain
that
, or -1
of no such subsequence exists.
Finds the last index before or at a given end index where this Chain
contains a given Every
as a slice.
Finds the last index before or at a given end index where this Chain
contains a given Every
as a slice.
the Every
defining the slice to look for
the end index
the last index >=
end
at which the elements of this Chain
starting at that index match the elements of
Every
that
, or -1
of no such subsequence exists.
Finds the last index where this Chain
contains a given Chain
as a slice.
Finds the last index where this Chain
contains a given Chain
as a slice.
the Chain
defining the slice to look for
the last index at which the elements of this Chain
starting at that index match the elements of
Chain
that
, or -1
of no such subsequence exists.
Finds the last index where this Chain
contains a given Every
as a slice.
Finds the last index where this Chain
contains a given Every
as a slice.
the Every
defining the slice to look for
the last index at which the elements of this Chain
starting at that index match the elements of
Every
that
, or -1
of no such subsequence exists.
Finds the last index before or at a given end index where this Chain
contains a given GenSeq
as a slice.
Finds the last index before or at a given end index where this Chain
contains a given GenSeq
as a slice.
the GenSeq
defining the slice to look for
the end index
the last index >=
end
at which the elements of this Chain
starting at that index match the elements of
GenSeq
that
, or -1
of no such subsequence exists.
Finds the last index where this Chain
contains a given GenSeq
as a slice.
Finds the last index where this Chain
contains a given GenSeq
as a slice.
the GenSeq
defining the slice to look for
the last index at which the elements of this Chain
starting at that index match the elements of
GenSeq
that
, or -1
of no such subsequence exists.
Finds index of last element satisfying some predicate before or at given end index.
Finds index of last element satisfying some predicate before or at given end index.
the predicate used to test elements.
the end index
the index >=
end
of the last element of this Chain
that satisfies the predicate p
,
or -1
, if none exists.
Finds index of last element satisfying some predicate.
Finds index of last element satisfying some predicate.
the predicate used to test elements.
the index of the last element of this Chain
that satisfies the predicate p
, or -1
, if none exists.
Returns the last element of this Chain
, wrapped in a Some
.
Returns the last element of this Chain
, wrapped in a Some
.
the last element, wrapped in a Some
.
The length of this Chain
.
The length of this Chain
.
Note: length
and size
yield the same result, which will be >
= 1.
the number of elements in this Chain
.
Compares the length of this Chain
to a test value.
Compares the length of this Chain
to a test value.
the test value that gets compared with the length.
a value x
where
x < 0 if this.length < len x == 0 if this.length == len x > 0 if this.length > len
Builds a new Chain
by applying a function to all elements of this Chain
.
Builds a new Chain
by applying a function to all elements of this Chain
.
the element type of the returned Chain
.
the function to apply to each element.
a new Chain
resulting from applying the given function f
to each element of this Chain
and collecting the results.
Finds the largest element.
Finds the largest element.
the largest element of this Chain
.
Finds the largest result after applying the given function to every element.
Finds the largest result after applying the given function to every element.
the largest result of applying the given function to every element of this Chain
.
Finds the smallest element.
Finds the smallest element.
the smallest element of this Chain
.
Finds the smallest result after applying the given function to every element.
Finds the smallest result after applying the given function to every element.
the smallest result of applying the given function to every element of this Chain
.
Displays all elements of this Chain
in a string using start, end, and separator strings.
Displays all elements of this Chain
in a string using start, end, and separator strings.
the starting string.
the separator string.
the ending string.
a string representation of this Chain
. The resulting string begins with the string start
and ends with the string
end
. Inside, In the resulting string, the result of invoking toString
on all elements of this Chain
are
separated by the string sep
.
Displays all elements of this Chain
in a string using a separator string.
Displays all elements of this Chain
in a string using a separator string.
the separator string
a string representation of this Chain
. In the resulting string, the result of invoking toString
on all elements of this
Chain
are separated by the string sep
.
Displays all elements of this Chain
in a string.
Displays all elements of this Chain
in a string.
a string representation of this Chain
. In the resulting string, the result of invoking toString
on all elements of this
Chain
follow each other without any separator string.
Returns true
to indicate this Chain
, like all Chain
s, is non-empty.
Returns true
to indicate this Chain
, like all Chain
s, is non-empty.
true
A copy of this Chain
with an element value appended until a given target length is reached.
A copy of this Chain
with an element value appended until a given target length is reached.
the target length
he padding value
a new Chain
consisting of all elements of this Chain
followed by the minimal number of occurrences
of elem
so that the resulting Chain
has a length of at least len
.
Produces a new Chain
where a slice of elements in this Chain
is replaced by another Chain
Produces a new Chain
where a slice of elements in this Chain
is replaced by another Chain
the index of the first replaced element
the Chain
whose elements should replace a slice in this Chain
the number of elements to drop in the original Chain
Iterates over distinct permutations.
Iterates over distinct permutations.
Here's an example:
Chain('a', 'b', 'b').permutations.toList = List(Chain(a, b, b), Chain(b, a, b), Chain(b, b, a))
an iterator that traverses the distinct permutations of this Chain
.
Returns the length of the longest prefix whose elements all satisfy some predicate.
Returns the length of the longest prefix whose elements all satisfy some predicate.
the predicate used to test elements.
the length of the longest prefix of this Chain
such that every element
of the segment satisfies the predicate p
.
The result of multiplying all the elements of this Chain
.
The result of multiplying all the elements of this Chain
.
This method can be invoked for any Chain[T]
for which an implicit Numeric[T]
exists.
the product of all elements
Reduces the elements of this Chain
using the specified associative binary operator.
Reduces the elements of this Chain
using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
a type parameter for the binary operator, a supertype of T.
a binary operator that must be associative.
the result of applying reduce operator op
between all the elements of this Chain
.
Applies a binary operator to all elements of this Chain
, going left to right.
Applies a binary operator to all elements of this Chain
, going left to right.
the result type of the binary operator.
the binary operator.
the result of inserting op
between consecutive elements of this Chain
, going left to right:
op(...op(op(x_1, x_2), x_3), ..., x_n)where x_{1}, ..., x_{n} are the elements of this
Chain
.Applies a binary operator to all elements of this Chain
, going left to right, returning the result in a Some
.
Applies a binary operator to all elements of this Chain
, going left to right, returning the result in a Some
.
the result type of the binary operator.
the binary operator.
a Some
containing the result of reduceLeft(op)
Applies a binary operator to all elements of this Chain
, going right to left.
Applies a binary operator to all elements of this Chain
, going right to left.
the result of the binary operator
the binary operator
the result of inserting op
between consecutive elements of this Chain
, going right to left:
op(x_1, op(x_2, ... op(x_{n-1}, x_n)...))where x_{1}, ..., x_{n} are the elements of this
Chain
.Applies a binary operator to all elements of this Chain
, going right to left, returning the result in a Some
.
Applies a binary operator to all elements of this Chain
, going right to left, returning the result in a Some
.
the result of the binary operator
the binary operator
a Some
containing the result of reduceRight(op)
Returns new Chain
with elements in reverse order.
Returns new Chain
with elements in reverse order.
a new Chain
with all elements of this Chain
in reversed order.
An iterator yielding elements in reverse order.
An iterator yielding elements in reverse order.
Note: chain.reverseIterator
is the same as chain.reverse.iterator
, but might be more efficient.
an iterator yielding the elements of this Chain
in reversed order
Builds a new Chain
by applying a function to all elements of this Chain
and collecting the results in reverse order.
Builds a new Chain
by applying a function to all elements of this Chain
and collecting the results in reverse order.
Note: chain.reverseMap(f)
is the same as chain.reverse.map(f)
, but might be more efficient.
the element type of the returned Chain
.
the function to apply to each element.
a new Chain
resulting from applying the given function f
to each element of this Chain
and collecting the results in reverse order.
Checks if the given Chain
contains the same elements in the same order as this Chain
.
Checks if the given Chain
contains the same elements in the same order as this Chain
.
the Chain
with which to compare
true
, if both this and the given Chain
contain the same elements
in the same order, false
otherwise.
Checks if the given Every
contains the same elements in the same order as this Chain
.
Checks if the given Every
contains the same elements in the same order as this Chain
.
the Every
with which to compare
true
, if both this and the given Every
contain the same elements
in the same order, false
otherwise.
Checks if the given GenIterable
contains the same elements in the same order as this Chain
.
Checks if the given GenIterable
contains the same elements in the same order as this Chain
.
the GenIterable
with which to compare
true
, if both this Chain
and the given GenIterable
contain the same elements
in the same order, false
otherwise.
Computes a prefix scan of the elements of this Chain
.
Computes a prefix scan of the elements of this Chain
.
Note: The neutral element z may be applied more than once.
Here are some examples:
Chain(1, 2, 3).scan(0)(_ + _) == Chain(0, 1, 3, 6) Chain(1, 2, 3).scan("z")(_ + _.toString) == Chain("z", "z1", "z12", "z123")
a type parameter for the binary operator, a supertype of T, and the type of the resulting Chain
.
a neutral element for the scan operation; may be added to the result an arbitrary number of
times, and must not change the result (e.g., Nil
for list concatenation,
0 for addition, or 1 for multiplication.)
a binary operator that must be associative
a new Chain
containing the prefix scan of the elements in this Chain
Produces a Chain
containing cumulative results of applying the operator going left to right.
Produces a Chain
containing cumulative results of applying the operator going left to right.
Here are some examples:
Chain(1, 2, 3).scanLeft(0)(_ + _) == Chain(0, 1, 3, 6) Chain(1, 2, 3).scanLeft("z")(_ + _) == Chain("z", "z1", "z12", "z123")
the result type of the binary operator and type of the resulting Chain
the start value.
the binary operator.
a new Chain
containing the intermediate results of inserting op
between consecutive elements of this Chain
,
going left to right, with the start value, z
, on the left.
Produces a Chain
containing cumulative results of applying the operator going right to left.
Produces a Chain
containing cumulative results of applying the operator going right to left.
Here are some examples:
Chain(1, 2, 3).scanRight(0)(_ + _) == Chain(6, 5, 3, 0) Chain(1, 2, 3).scanRight("z")(_ + _) == Chain("123z", "23z", "3z", "z")
the result of the binary operator and type of the resulting Chain
the start value
the binary operator
a new Chain
containing the intermediate results of inserting op
between consecutive elements of this Chain
,
going right to left, with the start value, z
, on the right.
Computes length of longest segment whose elements all satisfy some predicate.
Computes length of longest segment whose elements all satisfy some predicate.
the predicate used to test elements.
the index where the search starts.
The size of this Chain
.
The size of this Chain
.
Note: length
and size
yield the same result, which will be >
= 1.
the number of elements in this Chain
.
Groups elements in fixed size blocks by passing a “sliding window” over them (as opposed to partitioning them, as is done in grouped.),
moving the sliding window by a given step
each time.
Groups elements in fixed size blocks by passing a “sliding window” over them (as opposed to partitioning them, as is done in grouped.),
moving the sliding window by a given step
each time.
the number of elements per group
the distance between the first elements of successive groups
an iterator producing Chain
s of size size
, except the last and the only element will be truncated
if there are fewer elements than size
.
Groups elements in fixed size blocks by passing a “sliding window” over them (as opposed to partitioning them, as is done in grouped.)
Groups elements in fixed size blocks by passing a “sliding window” over them (as opposed to partitioning them, as is done in grouped.)
the number of elements per group
an iterator producing Chain
s of size size
, except the last and the only element will be truncated
if there are fewer elements than size
.
Sorts this Chain
according to the Ordering
of the result of applying the given function to every element.
Sorts this Chain
according to the Ordering
of the result of applying the given function to every element.
the target type of the transformation f
, and the type where the Ordering
ord
is defined.
the transformation function mapping elements to some other domain U
.
the ordering assumed on domain U
.
a Chain
consisting of the elements of this Chain
sorted according to the Ordering
where
x < y if ord.lt(f(x), f(y))
.
Sorts this Chain
according to a comparison function.
Sorts this Chain
according to a comparison function.
The sort is stable. That is, elements that are equal (as determined by lt
) appear in the same order in the
sorted Chain
as in the original.
a Chain
consisting of the elements of this Chain
sorted according to the comparison function lt
.
Sorts this Chain
according to an Ordering
.
Sorts this Chain
according to an Ordering
.
The sort is stable. That is, elements that are equal (as determined by lt
) appear in the same order in the
sorted Chain
as in the original.
the Ordering
to be used to compare elements.
a Chain
consisting of the elements of this Chain
sorted according to the comparison function lt
.
Indicates whether this Chain
starts with the given Chain
at the given index.
Indicates whether this Chain
starts with the given Chain
at the given index.
the Chain
slice to look for in this Chain
the index at which this Chain
is searched.
true
if this Chain
has that
as a slice at the index offset
, false
otherwise.
Indicates whether this Chain
starts with the given Every
at the given index.
Indicates whether this Chain
starts with the given Every
at the given index.
the Every
slice to look for in this Chain
the index at which this Chain
is searched.
true
if this Chain
has that
as a slice at the index offset
, false
otherwise.
Indicates whether this Chain
starts with the given Chain
.
Indicates whether this Chain
starts with the given Chain
.
the Chain
to test
true
if this collection has that
as a prefix, false
otherwise.
Indicates whether this Chain
starts with the given Every
.
Indicates whether this Chain
starts with the given Every
.
the Every
to test
true
if this collection has that
as a prefix, false
otherwise.
Indicates whether this Chain
starts with the given GenSeq
at the given index.
Indicates whether this Chain
starts with the given GenSeq
at the given index.
the GenSeq
slice to look for in this Chain
the index at which this Chain
is searched.
true
if this Chain
has that
as a slice at the index offset
, false
otherwise.
Indicates whether this Chain
starts with the given GenSeq
.
Indicates whether this Chain
starts with the given GenSeq
.
the GenSeq
slice to look for in this Chain
true
if this Chain
has that
as a prefix, false
otherwise.
Returns "Chain"
, the prefix of this object's toString
representation.
Returns "Chain"
, the prefix of this object's toString
representation.
the string "Chain"
The result of summing all the elements of this Chain
.
The result of summing all the elements of this Chain
.
This method can be invoked for any Chain[T]
for which an implicit Numeric[T]
exists.
the sum of all elements
Converts this Chain
into a collection of type Col
by copying all elements.
Converts this Chain
into a collection of type Col
by copying all elements.
the collection type to build.
a new collection containing all elements of this Chain
.
Converts this Chain
to an array.
Converts this Chain
to an array.
an array containing all elements of this Chain
. A ClassTag
must be available for the element type of this Chain
.
Converts this Chain
to a mutable buffer.
Converts this Chain
to a mutable buffer.
a buffer containing all elements of this Chain
.
Converts this Chain
to an immutable IndexedSeq
.
Converts this Chain
to an immutable IndexedSeq
.
an immutable IndexedSeq
containing all elements of this Chain
.
Converts this Chain
to an iterable collection.
Converts this Chain
to an iterable collection.
an Iterable
containing all elements of this Chain
.
Returns an Iterator
over the elements in this Chain
.
Returns an Iterator
over the elements in this Chain
.
an Iterator
containing all elements of this Chain
.
Converts this Chain
to a map.
Converts this Chain
to a map.
This method is unavailable unless the elements are members of Tuple2
, each ((K, V))
becoming a key-value pair
in the map. Duplicate keys will be overwritten by later keys.
a map of type immutable.Map[K, V]
containing all key/value pairs of type (K, V)
of this Chain
.
Converts this Chain
to an immutable IndexedSeq
.
Converts this Chain
to an immutable IndexedSeq
.
an immutable IndexedSeq
containing all elements of this Chain
.
Converts this Chain
to a set.
Converts this Chain
to a set.
a set containing all elements of this Chain
.
Converts this Chain
to a stream.
Converts this Chain
to a stream.
a stream containing all elements of this Chain
.
Returns a string representation of this Chain
.
Returns a string representation of this Chain
.
the string "Chain"
followed by the result of invoking toString
on
this Chain
's elements, surrounded by parentheses.
Converts this Chain
to an unspecified Traversable.
Converts this Chain
to an unspecified Traversable.
a Traversable
containing all elements of this Chain
.
Converts this Chain
to a Vector
.
Converts this Chain
to a Vector
.
a Vector
containing all elements of this Chain
.
Produces a new Chain
that contains all elements of this Chain
and also all elements of a given GenSeq
.
Produces a new Chain
that contains all elements of this Chain
and also all elements of a given GenSeq
.
chainX
union
ys
is equivalent to chainX
++
ys
.
Another way to express this is that chainX
union
ys
computes the order-presevring multi-set union
of chainX
and ys
. This union
method is hence a counter-part of diff
and intersect
that
also work on multi-sets.
the GenSeq
to add.
a new Chain
that contains all elements of this Chain
followed by all elements of that
GenSeq
.
Produces a new Chain
that contains all elements of this Chain
and also all elements of a given Chain
.
Produces a new Chain
that contains all elements of this Chain
and also all elements of a given Chain
.
chainX
union
chainY
is equivalent to chainX
++
chainY
.
Another way to express this is that chainX
union
chainY
computes the order-presevring multi-set union
of chainX
and chainY
. This union
method is hence a counter-part of diff
and intersect
that
also work on multi-sets.
the Chain
to add.
a new Chain
that contains all elements of this Chain
followed by all elements of that
.
Produces a new Chain
that contains all elements of this Chain
and also all elements of a given Every
.
Produces a new Chain
that contains all elements of this Chain
and also all elements of a given Every
.
chainX
union
everyY
is equivalent to chainX
++
everyY
.
Another way to express this is that chainX
union
everyY
computes the order-presevring multi-set union
of chainX
and everyY
. This union
method is hence a counter-part of diff
and intersect
that
also work on multi-sets.
the Every
to add.
a new Chain
that contains all elements of this Chain
followed by all elements of that
Every
.
Converts this Chain
of pairs into two Chain
s of the first and second half of each pair.
Converts this Chain
of pairs into two Chain
s of the first and second half of each pair.
the type of the first half of the element pairs
the type of the second half of the element pairs
an implicit conversion that asserts that the element type of this Chain
is a pair.
a pair of Chain
s, containing the first and second half, respectively, of each element pair of this Chain
.
Converts this Chain
of triples into three Chain
s of the first, second, and and third element of each triple.
Converts this Chain
of triples into three Chain
s of the first, second, and and third element of each triple.
the type of the first member of the element triples
the type of the third member of the element triples
an implicit conversion that asserts that the element type of this Chain
is a triple.
a triple of Chain
s, containing the first, second, and third member, respectively, of each element triple of this Chain
.
A copy of this Chain
with one single replaced element.
A copy of this Chain
with one single replaced element.
the position of the replacement
the replacing element
a copy of this Chain
with the element at position idx
replaced by elem
.
IndexOutOfBoundsException
if the passed index is greater than or equal to the length of this Chain
final
def
zipAll[O, U >: T](other: Iterable[O], thisElem: U, otherElem: O): Chain[(U, O)]
Returns a
Chain
formed from this Chain
and an iterable collection by combining corresponding
elements in pairs.
Returns a Chain
formed from this Chain
and an iterable collection by combining corresponding
elements in pairs. If one of the two collections is shorter than the other, placeholder elements will be used to extend the
shorter collection to the length of the longer.
the Iterable
providing the second half of each result pair
the element to be used to fill up the result if this Chain
is shorter than that
Iterable
.
a new Chain
containing pairs consisting of corresponding elements of this Chain
and that
. The
length of the returned collection is the maximum of the lengths of this Chain
and that
. If this Chain
is shorter than that
, thisElem
values are used to pad the result. If that
is shorter than this
Chain
, thatElem
values are used to pad the result.
Zips this Chain
with its indices.
Zips this Chain
with its indices.
A new Chain
containing pairs consisting of all elements of this Chain
paired with their index. Indices start at 0.
A non-empty list: an ordered, immutable, non-empty collection of elements with
LinearSeq
performance characteristics.The purpose of
Chain
is to allow you to express in a type that aList
is non-empty, thereby eliminating the need for (and potential exception from) a run-time check for non-emptiness. For a non-empty sequence withIndexedSeq
performance, seeEvery
.Constructing
Chain
sYou can construct a
Chain
by passing one or more elements to theChain.apply
factory method:Alternatively you can cons elements onto the
End
singleton object, similar to making aList
starting withNil
:Note that although
Nil
is aList[Nothing]
,End
is not aChain[Nothing]
, because no emptyChain
exists. (A chain is a series of connected links; if you have no links, you have no chain.)Working with
Chain
sChain
does not extend Scala'sSeq
orTraversable
traits because these require that implementations may be empty. For example, if you invoketail
on aSeq
that contains just one element, you'll get an emptySeq
:On the other hand, many useful methods exist on
Seq
that when invoked on a non-emptySeq
are guaranteed to not result in an emptySeq
. For convenience,Chain
defines a method corresponding to every suchSeq
method. Here are some examples:Chain
does not currently define any methods corresponding toSeq
methods that could result in an emptySeq
. However, an implicit converison fromChain
toList
is defined in theChain
companion object that will be applied if you attempt to call one of the missing methods. As a result, you can invokefilter
on anChain
, even thoughfilter
could result in an empty sequence—but the result type will beList
instead ofChain
:You can use
Chain
s infor
expressions. The result will be anChain
unless you use a filter (anif
clause). Because filters are desugared to invocations offilter
, the result type will switch to aList
at that point. Here are some examples:the type of elements contained in this
Chain