lambda Namespace Reference

Functions
void	lambda_20 ()

Function Documentation

lambda_20()

void lambda::lambda_20

(

)

Definition at line 115 of file 20.cpp.

{
#if __cplusplus >= 201709
    // generic lambda, operator() is a template with two parameters
    auto glambda = []<class T>(T a, auto&& b) { return a < b; };
    assert(glambda(1,2));
    // generic lambda, operator() is a template with one parameter pack
    auto f = []<typename ...Ts>(Ts&& ...ts) {
        return 1;
    };
    assert(f(1,2,3));
 
    struct point { int x, y; };
    auto point_lambda = []<class T=point>(T&& var) {};
    point_lambda({1, 2});
 
    #if __cpp_template_template_args && __GNUG__ > 8
    assert(make_lambda_with_parameter_pack_capture(1,2,3)() ==  6);
    #endif
#endif
}

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