hash Structure (STL)


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Defines a member function that returns a value that's uniquely determined by Val. The member function defines a hash function that's suitable for mapping values of type thread::id to a distribution of index values.

template <>  
struct hash<thread::id> :   
    public unary_function<thread::id, size_t>  
    size_t operator()(thread::id Val) const;


Header: thread

Namespace: std

Header Files Reference
unary_function Struct