{ return maxByOrNull(selector) } /** * Returns the first element yielding the largest value of the given function or `null` if there are no elements. * * @sample samples.collections.Collections.Aggregates.maxByOrNull */ @SinceKotlin("1.4") public inline fun <T, R : Comparable<R>> ...
ThegetOrElsereturns the value for the given key, or the result of the specified function if there was no entry for the given key. Kotlin contains key/value ThecontainsKeychecks if the map contains a key. ThecontainsValuechecks if the map contains a value. MapContains.kt package com.zetcode...
finalType=if(finalTypeString=="kotlin.FunctionN") { TODO("unclear how to express this one since it has arity") }else{ val(parameters, returnType)=if(isSuspend) { //Coroutines always adds an `Any?` return type, but we kind of just want the ...
/** * Returns a list containing the results of applying the given [transform] function * to each element in the original collection. * 返回一个列表,其中包含将给定的[transform]函数应用于原始集合中的每个元素的结果。 * * @sample samples.collections.Collections.Transformations.map */ public inline ...
Kotlin Iterable.map是一个高阶函数,用于对可迭代对象中的每个元素进行转换操作,并返回一个新的集合。在模拟这个函数时,我们可以创建一个自定义的函数,接受一个可迭代对象和一个转换函数作为参数,并返回一个新的集合。 下面是一个模拟Kotlin Iterable.map的示例代码:...
* Returns a list containing the results of applying the given [transform] function * to each element in the original collection. * 返回一个列表,其中包含将给定的[transform]函数应用于原始集合中的每个元素的结果。 * * @sample samples.collections.Collections.Transformations.map ...
The map() function executes a given function to each element of an iterable (such as lists,tuples, etc.).
In this test, we use thefold()method on a list of pairs to iterate over each element in the list and skipnullvalues.The lambda function we pass to thefold()method checks if the second value of the pair is notnull. If that’s the case, we add the pair to a mutable map. Finally...
In the Android view, open app > kotlin+java > com.example.app > screens > MainScreen.kt. Find the createMap() function and delete it. MainScreen.kt Expand fun createMap(): ArcGISMap { return ArcGISMap(BasemapStyle.ArcGISTopographic).apply { initialViewpoint = Viewpoint( lat...
[Kotlin] Exercise for Map fun main(args: Array<String>) { val ipToCount= mutableMapOf<String, Int>() File("src/ips.txt").forEachLine { val previous= ipToCount.getOrDefault(it, 0) ipToCount.put(it, previous+ 1) }//get max count ipval (maxIp, maxCount) =ipToCount.entries....