std::function::assign
template< class F, class Alloc > void assign( F&& f, const Alloc& alloc ); | | (since C++11) (until C++17) |
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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 |
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alloc | - | allocator to use to allocate memory for the internal data structures |
返回值
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例外
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另见
operator= | assigns a new target (public member function) |
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