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std::function::assign

STD：：功能：：分配

template< class F, class Alloc > void assign( F&& f, const Alloc& alloc ​(since C++11) (until C++17)

初始化目标带着f...alloc对象的任何内部数据结构分配内存。function可能会用。

相当于function(allocator_arg, alloc,std::forward<F>(f)).swap(*this)...

参数

f-callable function to initialize the target with
alloc-allocator to use to allocate memory for the internal data structures

返回值

%280%29

例外

%280%29

另见

operator=assigns a new target (public member function)

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