Re:Mapping Strings in C++
by pg314 on Thursday April 13, 2017 @06:15AM
(#14105578)
> qsort might be general in the element type, but not in the container type.
That is a clear advantage of C++.
> Also without LTO it will be very expensive as it cannot inline the compare function call.
Templates force you to expose the implementation in a header file. In C you can choose. If you move the qsort implementation in a header file, the compiler should not have any trouble inlining it.
Inlining is not always a win, though (slower compiles, bigger code, more cache misses).
That is a clear advantage of C++.
> Also without LTO it will be very expensive as it cannot inline the compare function call.
Templates force you to expose the implementation in a header file. In C you can choose. If you move the qsort implementation in a header file, the compiler should not have any trouble inlining it.
Inlining is not always a win, though (slower compiles, bigger code, more cache misses).