Custom Query (146 matches)

Actually there is a way which is:

bool variable = functionPointer != (ReturnType (*)(ParameterType))0;

I guess a more accurate name would be "None of the initially obvious methods of converting a function pointer to a Boolean work and the one way that does is excessively complex" but that is wordy.

The "initially obvious" solutions started with simple assignment, which works in C, but when that failed I tried != with 0 and 0p and those did not work either.

I believe this is more likely to be from missing functions in the prelude.

    forall( dtype T, dtype U )
    struct map {};

    forall( dtype T )
    void f( T & ) {
        printf("f-generic\n");
    }

    forall( dtype T )
    void f( map(T, T) & ) {
        printf("f-specific\n");
    }

    int main() {
        float one;
        map(float, float) two;
        f(one);
        f(two);
    }

Actual output:

f-generic
f-generic

Expected output:

f-generic
f-specific

This code doesn't parse unless it's inside a function

#pragma GCC diagnostic push
#pragma GCC diagnostic pop