performSelector可能会致使泄漏，由于其选择器未知 - performSelector may cause a leak because its selector is unknown

问题：

I'm getting the following warning by the ARC compiler: ARC编译器收到如下警告：

"performSelector may cause a leak because its selector is unknown".

Here's what I'm doing: 这是我在作什么：

[_controller performSelector:NSSelectorFromString(@"someMethod")];

Why do I get this warning? 为何会收到此警告？ I understand the compiler can't check if the selector exists or not, but why would that cause a leak? 我知道编译器没法检查选择器是否存在，可是为何会致使泄漏？ And how can I change my code so that I don't get this warning anymore? 以及如何更改个人代码，以便再也不收到此警告？

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解决方案：

参考一： https://stackoom.com/question/TRVx/performSelector可能会致使泄漏-由于其选择器未知
参考二： https://oldbug.net/q/TRVx/performSelector-may-cause-a-leak-because-its-selector-is-unknown