Kotlin内联属性的用例是什么

发布于04月08日

由于属性getter或setter通常既没有作为参数的函数，也没有reified类型，那么使用inline属性的好处/用例是什么？

If the benefits would be to reduce cost related to method call, why not make all properties getter/setter inline by default?

Kotlin Inline Properties

如.

val foo: Foo
    inline get() = Foo()

var bar: Bar
    get() = ...
    inline set(v) { ... }

推荐答案

Here is inline properties discussion:

Example of reified type parameter:
inline val <reified T : PsiElement> T.nextSiblingOfSameType: T?
    get() = PsiTreeUtil.getNextSiblingOfType(this, T::class.java)
Another use case is to hide some properties from the binary interface of a library. In Kotlin standard library, together with the @InlineOnly annotation this might make it possible in the future to exclude declarations of such properties from class files, reducing method count, this will mostly benefit Android with it's 64K method limit.