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Defined in header `<functional>`

template< class T > struct equal_to;

Function object for performing comparisons. Implements operator== on type T.

std::equal_to::operator()


bool operator()( const T& lhs, const T& rhs ) const;

Checks whether lhs is equal to rhs.

lhs, rhs

-

values to compare

true if lhs == rhs, false otherwise.

(none)

bool operator()(const T &lhs, const T &rhs) const 
{
    return lhs == rhs;
}

std::equal_to


operator()	checks if the arguments are equal (public member function)