85 lines
2.3 KiB
Kotlin
85 lines
2.3 KiB
Kotlin
/*
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* Copyright 2016 JetBrains s.r.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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@file:Suppress("unused", "NOTHING_TO_INLINE")
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package org.jetbrains.anko.collections
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/**
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* Iterate the receiver [List] using an index.
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*
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* @f an action to invoke on each list element.
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*/
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inline fun <T> List<T>.forEachByIndex(f: (T) -> Unit) {
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val lastIndex = size - 1
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for (i in 0..lastIndex) {
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f(get(i))
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}
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}
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/**
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* Iterate the receiver [List] using an index.
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*
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* @f an action to invoke on each list element (index, element).
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*/
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inline fun <T> List<T>.forEachWithIndex(f: (Int, T) -> Unit) {
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val lastIndex = size - 1
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for (i in 0..lastIndex) {
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f(i, get(i))
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}
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}
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/**
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* Iterate the receiver [List] backwards using an index.
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*
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* @f an action to invoke on each list element.
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*/
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inline fun <T> List<T>.forEachReversedByIndex(f: (T) -> Unit) {
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var i = size - 1
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while (i >= 0) {
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f(get(i))
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i--
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}
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}
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/**
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* Iterate the receiver [List] backwards using an index.
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*
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* @f an action to invoke on each list element (index, element).
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*/
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inline fun <T> List<T>.forEachReversedWithIndex(f: (Int, T) -> Unit) {
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var i = size - 1
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while (i >= 0) {
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f(i, get(i))
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i--
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}
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}
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/**
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* Convert the Android pair to a Kotlin one.
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*
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* @see [toAndroidPair].
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*/
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@Deprecated(message = "Use the Android KTX version", replaceWith = ReplaceWith("toKotlinPair()", "androidx.core.util.toKotlinPair"))
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inline fun <F, S> android.util.Pair<F, S>.toKotlinPair(): Pair<F, S> = first to second
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/**
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* Convert the Kotlin pair to an Android one.
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*
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* @see [toKotlinPair].
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*/
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@Deprecated(message = "Use the Android KTX version", replaceWith = ReplaceWith("toAndroidPair()", "androidx.core.util.toAndroidPair"))
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inline fun <F, S> Pair<F, S>.toAndroidPair(): android.util.Pair<F, S> = android.util.Pair(first, second)
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