Svyatoslav Kuzmich
91 lines
2.8 KiB
Kotlin
91 lines
2.8 KiB
Kotlin
/*
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* Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
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* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
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*/
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@file:Suppress("NOTHING_TO_INLINE")
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package kotlin
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import kotlin.internal.PureReifiable
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public inline fun <T> emptyArray(): Array<T> = arrayOf()
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/**
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* Returns a string representation of the object. Can be called with a null receiver, in which case
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* it returns the string "null".
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*/
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public fun Any?.toString(): String = this?.toString() ?: "null"
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/**
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* Concatenates this string with the string representation of the given [other] object. If either the receiver
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* or the [other] object are null, they are represented as the string "null".
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*/
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public operator fun String?.plus(other: Any?): String = (this ?: "null") + other.toString()
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/**
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* Returns an array of objects of the given type with the given [size], initialized with null values.
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*/
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// TODO: Should T be reified?
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@Suppress("REIFIED_TYPE_PARAMETER_NO_INLINE")
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public fun <@PureReifiable reified T> arrayOfNulls(size: Int): Array<T?> = Array(size) { null }
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/**
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* Returns an array containing the specified elements.
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*/
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@Suppress("UNCHECKED_CAST")
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public inline fun <T> arrayOf(vararg elements: T): Array<T> = elements as Array<T>
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/**
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* Returns an array containing the specified [Double] numbers.
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*/
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public inline fun doubleArrayOf(vararg elements: Double): DoubleArray = elements
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/**
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* Returns an array containing the specified [Float] numbers.
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*/
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public inline fun floatArrayOf(vararg elements: Float): FloatArray = elements
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/**
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* Returns an array containing the specified [Long] numbers.
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*/
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public inline fun longArrayOf(vararg elements: Long): LongArray = elements
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/**
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* Returns an array containing the specified [Int] numbers.
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*/
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public inline fun intArrayOf(vararg elements: Int): IntArray = elements
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/**
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* Returns an array containing the specified characters.
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*/
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public inline fun charArrayOf(vararg elements: Char): CharArray = elements
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/**
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* Returns an array containing the specified [Short] numbers.
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*/
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public inline fun shortArrayOf(vararg elements: Short): ShortArray = elements
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/**
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* Returns an array containing the specified [Byte] numbers.
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*/
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public inline fun byteArrayOf(vararg elements: Byte): ByteArray = elements
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/**
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* Returns an array containing the specified boolean values.
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*/
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public inline fun booleanArrayOf(vararg elements: Boolean): BooleanArray = elements
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/**
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* Returns an array containing enum T entries.
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*/
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@SinceKotlin("1.1")
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@Suppress("NON_MEMBER_FUNCTION_NO_BODY")
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public inline fun <reified T : Enum<T>> enumValues(): Array<T>
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/**
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* Returns an enum entry with specified name.
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*/
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@SinceKotlin("1.1")
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@Suppress("NON_MEMBER_FUNCTION_NO_BODY", "UNUSED_PARAMETER")
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public inline fun <reified T : Enum<T>> enumValueOf(name: String): T |