On Tue, Jan 15, 2013 at 6:10 PM, TONGARI <tongari95@gmail.com> wrote:
2013/1/16 Jeffrey Lee Hellrung, Jr. <jeffrey.hellrung@gmail.com>
It's a nice thought but: (a) I think the situation where you want to break and/or continue more
than
one loop-level out at a time is rare; and (b) in those rare situations, explicitly using gotos and labels (with a descriptive name) is reasonably brief and readable; so I would be hesitant to adopt this.
Why not provide a more structured way for jumping if we really want to deprecate 'goto' in C++? It's not only for the old hands but the newcomers to adopt a more expressive control style.
I think Boost is a good place to start with, and we'll see if it'd be finally made into C++ language.
I would be supportive in considering adding syntactic support for "break LABEL" and "continue LABEL", but we have already have a reasonably good emulation that's entirely transparent (meaning, not hidden behind macros): {for(...) { for(...) { if(...) goto BREAK_FOR; } }BREAK_FOR:;} for(...) {{ for(...) { if(...) goto CONTINUE_FOR; } }CONTINUE_FOR:;} - Jeff