bearophile Wrote: > qwerty: > > If I return *this, I should also provide the *S version of opEquals? > > If you don't provide a necessary operator the compiler complaints. > > > > What happens with the return value if it isn't used? > > The function is one and it doesn't change, it has to be the same for everyone > that calls it (time ago I have suggested for a compile time flag that's > defined inside functions to know if their result is used, to avoid computing > it in some situations, turning the single function in a kind of templated > function, but I am not sure it can work well if you have function pointers. > So you need a single entry point for two functions).
For a function without any side effects, it shouldn't be a problem.. I think :) > > > > I mean, where will the *this end up? Or will the compiler not return it at > > all? > > The function returns it, but the result is ignored. In such situations > reading a little the asm helps. Yet another thing I should learn.. asm :) > > Bye, > bearophile
