once

c++11 call_once usage （ Perfect solution of initialization only once when multithreading ）

template         void call_once (once_flag& flag, Fn&& fn, Args&&...args); Need to include header file ： parameter ：（1）flag： yes std::once_falg obj...
2020-08-15 02:33 views 45

C++11 Medium std::call_once

In some scenarios , We need the code to be executed only once , For example, the initialization of singleton classes , Considering multithreading ...
2020-08-08 03:15 views 896
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