本文简单谈下Kotlin中的函数,包括表达式函数体,命名参数,默认参数,顶层函数,扩展函数,局部函数,Lambda表达式,成员引用,with/apply函数等。从例子入手,从一般写法到使用特性进行简化,再到原理解析。 1.表达式函数体 通过下面这个简单的例子看下函数声明相关的概念,函数声明的关键字是fun,嗯,比JS的function还简单。 Kotli...
Signature: #7 // (Lkotlin/jvm/functions/Function0<Lkotlin/Unit;>;)V RuntimeInvisibleParameterAnnotations: 0: 0: #8() public static final void main(java.lang.String[]); descriptor: ([Ljava/lang/String;)V flags: ACC_PUBLIC, ACC_STATIC, ACC_FINAL Code: stack=2, locals=1, args_size=...
0 14 0 callback Lkotlin/jvm/functions/Function0; Signature: #7 // (Lkotlin/jvm/functions/Function0<Lkotlin/Unit;>;)V RuntimeInvisibleParameterAnnotations: 0: 0: #8() public static final void main(java.lang.String[]); descriptor: ([Ljava/lang/String;)V flags: ACC_PUBLIC, ACC_STATIC,...
Kotlin中没有static关键字。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // TestKotlin.kt var staticInt:Int =10 class TestKotlin { } // 不同包下使用静态变量 import com.example.myapplication.staticInt class ApplicationKotlin { fun print(){ staticInt } } 不可变值的定义 不可变值的作用...
finalclassch05.TestLambdaKt$main$1extendskotlin.jvm.internal.Lambdaimplementskotlin.jvm.functions.Function0<kotlin.Unit>minor version:0major version:50flags:ACC_FINAL,ACC_SUPERConstantpool:...{publicstaticfinalch05.TestLambdaKt$main$1INSTANCE;descriptor:Lch05/TestLambdaKt$main$1;flags:ACC_PUBLIC,ACC...
ExampleUnitTest2Kt.testLambda((Function0)(new Function0() { // $FF: synthetic method // $FF: bridge method public Object invoke() { this.invoke(); return Unit.INSTANCE; } public final void invoke() { String var1 = Test.this.getMStr(); ...
public static void main(String[] args){ PhotoViewer .INSTANCE .setOnPhotoViewerCreatedListener(new Function0<Unit>() { @Override public Unit invoke() { System.out.println("okok"); return null; } }); } Example #21Source File: AbstractPowerMenu.java From PowerMenu with Apache License 2.0 5...
publicstatic void main(String[] args) { String text = TopLevelDemoKt.topFunction(); } } 我们还也可以通过注解@file:JvmName指定生成的类名: @file:JvmName("Top") packagecom.example funtopFunction(): String { return"这是一个顶级方法"
because createMappings is a static, this means i don't need an instance of Outer to call the static function. So i can just do val l: List<String> = Outer::createMappings() My problem with this is that one and two and it.name are instance variables of Outer, which means that they...
However, as soon as these checks are extracted in a separate function, all the smartcasts immediately disappear: 将检查提取到一个函数中, smart cast 所带来的效果都会消失 编译器无法深入分析每一个函数,原因在于实际开发中我们可能写出更加复杂的代码,而 Kotlin 编译器进行了大量的静态分析,如果编译器去分析...