https://www.cprogramming.com/c++11/c++11-lambda-closures.html
https://www.cnblogs.com/lidabo/p/3908663.html
auto handle = [] () {
};
- 闭包 []
闭包的作用是对外部变量的捕捉(capture)
[] Capture nothing (or, a scorched earth strategy?)
[&] Capture any referenced variable by reference
[=] Capture any referenced variable by making a copy
[=, &foo] Capture any referenced variable by making a copy, but capture variable foo by reference
[bar] Capture bar by making a copy; don't copy anything else
[this] Capture the this pointer of the enclosing class - 参数列表 ()
- 函数体{}
后续补充
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