Focus on the predicate function that is being passed as a parameter: public static final <T> Collection<T> filter(Collection<T>, kotlin.jvm.functions.Function1<T, Boolean>); Notice how the predicate is handled by using the Function1 interface? Now, if we call this in Kotlin: sample...
The kotlin inline function is one of the types of function by using the keyword inline. It is used for to enhance the performance of the higher-order function also these inline function which helps to call and tell the compiler for to copy the parameters and functions. it does not support ...
Focus on the predicate function that is being passed as a parameter: public static final <T> Collection<T> filter(Collection<T>, kotlin.jvm.functions.Function1<T, Boolean>); Notice how the predicate is handled by using the Function1 interface? Now, if we call this in Kotlin: sample...
private final void highFuc(String name, Function1 block) { (name); } public interface Function1<in P1, out R> : Function<R> { public operator fun invoke(p1: P1): R } 所以函数参数最终会转换成interface,并通过创建一个匿名实例来实现。这样就会造成额外的内存开销。为了解决这个问题,kotlin引入i...
kotlin内联函数 inline function 内联函数 内联函数提高一些效率
public static final void noInlineFunc(@NotNull Function0 action) { Intrinsics.checkNotNullParameter(action, "action"); action.invoke(); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 接下来就是解释上面第二句的意思,由于inline修饰函数会直接将函数体内容放在相应...
Function0 lambda = new Function0() {public Object invoke(){// body}};对于“附加”类的实现来说，反编译是这样的：// Additional class in separate filepublicclassTestInlineKt$lambdaimplementsFunction0{public Object invoke(){// code}}// UsageFunction0 lambda = new TestInlineKt$lambda()有了上边...
}publicstaticfinalvoidnoInlineFunc(@NotNullFunction0 action){ Intrinsics.checkNotNullParameter(action,"action"); action.invoke(); } 接下来就是解释上面第二句的意思,由于inline修饰函数会直接将函数体内容放在相应调用的位置,所以其函数类型参数就不能作为一个引用来进行使用。
以下为 Kotlin 标准库中默认函数的匿名内部类模板: /** A function that takes 0 arguments. */ public interface Function0<out R> : Function<R> { /** Invokes the function. */ public operator fun invoke(): R } /** A function that takes 1 argument. */ public interface Function1<in P1,...
而没有使用inline修饰的方法,则会为block方法创建一个Function1实例。 简单的理解就是未使用inline修饰的方式,会对带有函数式参数的方法,创建对于函数的实例,再将这个实例传递到方法参数中。该参数方法最终在原方法的内部被显示调用。 所以inline做的优化就是将带有函数参数的方法简化成没函数式参数的直接调用。好处是...