KtListExtensions<T> extension
Properties
-
dart
→ List<T>
-
Returns a read-only dart:core List
no setter
-
lastIndex
→ int
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Returns the index of the last item in the list or -1 if the list is empty.
no setter
Methods
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cast<R>()
→ KtList<R>
-
Provides a view of this KtList as an list of
R instances.
-
dropLast(int n)
→ KtList<T>
-
Returns a list containing all elements except last
n elements.
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dropLastWhile(bool predicate(T))
→ KtList<T>
-
Returns a list containing all elements except last elements that satisfy the given
predicate.
-
elementAt(int index)
→ T
-
Returns an element at the given
index or throws an IndexOutOfBoundsException if the index is out of bounds of this list.
-
elementAtOrElse(int index, T defaultValue(int index))
→ T
-
Returns an element at the given
index or the result of calling the defaultValue function if the index is out of bounds of this list.
-
elementAtOrNull(int index)
→ T?
-
Returns an element at the given
index or null if the index is out of bounds of this collection.
-
first([bool predicate(T)?])
→ T
-
Returns first element.
-
foldRight<R>(R initial, R operation(T, R acc))
→ R
-
Accumulates value starting with
initial value and applying operation from right to left to each element and current accumulator value.
-
foldRightIndexed<R>(R initial, R operation(int index, T, R acc))
→ R
-
Accumulates value starting with
initial value and applying operation from right to left
to each element with its index in the original list and current accumulator value.
@param operation function that takes the index of an element, the element itself
and current accumulator value, and calculates the next accumulator value.
-
getOrElse(int index, T defaultValue(int))
→ T
-
Returns an element at the given
index or the result of calling the defaultValue function if the index is out of bounds of this list.
-
getOrNull(int index)
→ T?
-
Returns an element at the given
index or null if the index is out of bounds of this list.
-
last([bool predicate(T)?])
→ T
-
Returns the last element matching the given
predicate.
@throws NoSuchElementException if no such element is found.
-
reduceRight<S>(S operation(T, S acc))
→ S
-
Accumulates value starting with last element and applying
operation from right to left to each element and current accumulator value.
-
reduceRightIndexed<S>(S operation(int index, T, S acc))
→ S
-
Accumulates value starting with last element and applying
operation from right to left
to each element with its index in the original list and current accumulator value.
@param operation function that takes the index of an element, the element itself
and current accumulator value, and calculates the next accumulator value.
-
single([bool predicate(T)?])
→ T
-
Returns the single element matching the given
predicate, or throws an exception if the list is empty or has more than one element.
-
singleOrNull([bool predicate(T)?])
→ T?
-
Returns the single element matching the given
predicate, or null if element was not found or more than one element was found.
-
slice(KtIterable<int> indices)
→ KtList<T>
-
Returns a list containing elements at specified
indices.
-
takeLast(int n)
→ KtList<T>
-
Returns a list containing last
n elements.
-
takeLastWhile(bool predicate(T))
→ KtList<T>
-
Returns a list containing last elements satisfying the given
predicate.
