std::once_flag
From cppreference.com
| Defined in header <mutex>
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| class once_flag; |
Template:mark c++11 feature | |
The class std::once_flag is a helper structure passed to Template:cpp to group invocations of that function so that only one invocation results in execution of one of the functions passed to Template:cpp.
Noncopyable.
Member functions
| constructs the object (public member function) |
