Unused parameter in c++11
You can just omit the parameter names:
int main(int, char *[])
{
return 0;
}
And in the case of main, you can even omit the parameters altogether:
int main()
{
// no return implies return 0;
}
See "§ 3.6 Start and Termination" in the C++11 Standard.
There is the <tuple>
in C++11, which includes the ready to use std::ignore
object, that's allow us to write (very likely without imposing runtime overheads):
void f(int x)
{
std::ignore = x;
}
I have used a function with an empty body for that purpose:
template <typename T>
void ignore(T &&)
{ }
void f(int a, int b)
{
ignore(a);
ignore(b);
return;
}
I expect any serious compiler to optimize the function call away and it silences warnings for me.