G add<G>(G a, G b)
{
if (a is int && b is int)
return (int) a + (int) b;
if (a is double && b is double)
return (double) a + (double) b;
return 0;
}
int main(string[] args)
{
var result = add(2, 3);
result = add(1.2, 3.4);
print("Result: %f\n".printf(result));
return 0;
}
Results in:
$ valac -C sample.vala
sample.vala:24.5-24.26: error: Assignment: Cannot convert from `double' to
`int'
result = add(1.2, 3.4);
^^^^^^^^^^^^^^^^^^^^^^
Compilation failed: 1 error(s), 0 warning(s)
I think that will not work. Generics without any condition (where, extends,
implements) is very tricky. Maybe creating a wrapper type or one C function
for each signature/types used...
--
@geovanisouza92 - Geovani de Souza
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