Kotlin function arguments may have default values; they are used if no value is provided for the argument. Main.kt package com.zetcode fun power(a: Int, b: Int = 2): Int { if (b == 2) { return a * a } var value
Function Arguments In Kotlin, function arguments can use names and default values. This simplifies reading and understanding at the call site and allows to limit the number of function overloads. Because you do not have to make a new function for every argument that is optional, you just put...
When aparameteris passed to the function, it is called anargument. So, from the example above:fnameis aparameter, whileJohn,JaneandGeorgearearguments. Multiple Parameters You can have as many parameters as you like: Example funmyFunction(fname:String,age:Int){println(fname+" is "+age)}fu...
命名参数/具名参数 (Named arguments) 以前面的函数为例子,我们调用它: helloFunction("Kotlin") 和Java 一样。 不过,Kotlin 提供了一些新的特性,如命名函数参数举个例子,现在有一个函数: fun createUser( name: String, age: Int, gender: Int, friendCount: Int, feedCount: Int, likeCount: Long, commen...
命名参数/具名参数 (Named arguments) 以前面的函数为例子,我们调用它: 代码语言:text AI代码解释 helloFunction("Kotlin") 和Java 一样。 不过,Kotlin 提供了一些新的特性,如命名函数参数 举个例子,现在有一个函数: 代码语言:text AI代码解释 fun createUser( ...
Example: User-defined Function With Infix Notation class Structure() { infix fun createPyramid(rows: Int) { var k = 0 for (i in 1..rows) { k = 0 for (space in 1..rows-i) { print(" ") } while (k != 2*i-1) { print("* ") ++k } println() } } } fun main(args: ...
函数声明( Define Function ) 让函数更好的调用( Making functions easier to call ) 命名参数/具名参数 (Named arguments) 参数默认值(Default arguments) 变量(Variables) 在Java/C 当中,如果我们要声明变量,我们必须要声明它的类型,后面跟着变量的名称和对应的值,然后以分号结尾。就像这样: ...
fun main(args: Array<String>) {val arg1 = args[0].toInt()val arg2 = args[1].toInt()println("$arg1+$arg2= ${sum(arg1, arg2)}")}fun sum(arg1: Int, arg2: Int): Int {return arg1 + arg2}kotlin简便写法:fun sum(arg1: Int, arg2: Int) = arg1 + arg2...
arguments.map { result = result.plus(BigDecimal(it.toString())) }returnresult } mathPlus(1,2,3,4.5) --->10.5 尾递归函数 Kotlin支持尾递归的编程风格。允许一些算法可以通过循环而不是递归解决问题,避免堆栈溢出导致的系统不稳定。Kotlin还提供了尾递归优化的关键字tailrec。但要符合 tailrec 修饰符的条件...
Main.java public class Main { public static void main(String[] args) { int x = 5; int y = 10; System.out.println(x + y); } } In this example, both programs do the same thing: they add two numbers and print the result. However, the Kotlin code is more concise and straightfor...