我正在了解 Kotlin 最近加入的 Context parameters。
在某些情况下，一个代码块可以使用一个或多个上下文，却没法直接引用它们（没有变量绑定到它们）。它们只能在调用带上下文参数的函数时继续向下传递。
获取这种没有名称的上下文，通常怎么写？
为了拿到它，我写了这个小工具函数。
context(current: C) inline fun <reified C> grabContext() = current不过，也许已经有标准函数能做这件事。
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I'm exploring Kotlin's recent addition, Context parameters.
Under certain circumstances, a code block can have one or several contexts available without a direct way to reference them (there's no variable bound to them). They're accessible solely to forward into calls of functions taking context parameters.
What's the conventional way to retrieve one of these unnamed contexts?
I made this tiny utility to get at it:
context(current: C) inline fun <reified C> grabContext() = currentHowever, perhaps a standard function already does this.
