James Strachan
80 lines
2.6 KiB
Kotlin
80 lines
2.6 KiB
Kotlin
// NOTE this file is auto-generated from src/kotlin/JLangIterablesLazy.kt
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package kotlin
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import kotlin.util.*
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import java.util.ArrayList
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import java.util.Collection
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import java.util.List
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//
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// This file contains methods which could have a lazy implementation for things like
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// Iterator<T> or java.util.Iterator<T>
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//
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// See [[GenerateStandardLib.kt]] for more details
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//
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/**
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* Returns a list containing all elements which match the given *predicate*
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*
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* @includeFunctionBody ../../test/CollectionTest.kt filter
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*/
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public inline fun <T> Array<T>.filter(predicate: (T) -> Boolean) : List<T> = filterTo(ArrayList<T>(), predicate)
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/**
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* Returns a list containing all elements which do not match the given predicate
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*
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* @includeFunctionBody ../../test/CollectionTest.kt filterNot
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*/
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public inline fun <T> Array<T>.filterNot(predicate: (T)-> Boolean) : List<T> = filterNotTo(ArrayList<T>(), predicate)
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/**
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* Returns a list containing all the non-*null* elements
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*
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* @includeFunctionBody ../../test/CollectionTest.kt filterNotNull
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*/
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public inline fun <T> Array<T?>?.filterNotNull() : List<T> = filterNotNullTo<T, ArrayList<T>>(java.util.ArrayList<T>())
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/**
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* Returns the result of transforming each element to one or more values which are concatenated together into a single collection
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*
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* @includeFunctionBody ../../test/CollectionTest.kt flatMap
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*/
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public inline fun <T, R> Array<T>.flatMap(transform: (T)-> Collection<R>) : Collection<R> = flatMapTo(ArrayList<R>(), transform)
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/**
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* Returns a list containing the first *n* elements
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*
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* @includeFunctionBody ../../test/CollectionTest.kt take
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*/
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public inline fun <T> Array<T>.take(n: Int): List<T> {
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fun countTo(n: Int): (T) -> Boolean {
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var count = 0
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return { ++count; count <= n }
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}
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return takeWhile(countTo(n))
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}
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/**
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* Returns a list containing the first elements that satisfy the given *predicate*
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*
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* @includeFunctionBody ../../test/CollectionTest.kt takeWhile
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*/
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public inline fun <T> Array<T>.takeWhile(predicate: (T) -> Boolean): List<T> = takeWhileTo(ArrayList<T>(), predicate)
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/**
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* Creates a string from all the elements separated using the *separator* and using the given *prefix* and *postfix* if supplied
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*
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* @includeFunctionBody ../../test/CollectionTest.kt join
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*/
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public inline fun <T> Array<T>.join(separator: String = ", ", prefix: String = "", postfix: String = "") : String {
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val buffer = StringBuilder(prefix)
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var first = true
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for (element in this) {
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if (first) first = false else buffer.append(separator)
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buffer.append(element)
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}
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buffer.append(postfix)
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return buffer.toString().sure()
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}
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