steve donovan wrote: > On Mon, Jun 13, 2011 at 9:51 PM, Petite Abeille > <petite.abeille@gmail.com> wrote: >> Goto? Really? How quaint :P > > Seriously, very useful sometimes. Even the person who hammered > structured programming into me using Pascal (Judy Bishop) accepted > that a goto could be used without committing a sin. Hell yeah. I'm really happy to see this, it's something I've been wanting in Lua for ages... > Also, interesting possibilities for code generation. ...primarily for this reason. Trying to flatten a basic block graph into runnable code when all you have are if...then...else, while..., repeat...until etc is *really hard*, and I believe (though I haven't seen proof) is actually impossible in the general case. Having actual goto available makes life so much easier. I assume that goto labels exist in their own namespace and are scoped alongside locals; but the necessity for forward references does make life more complicated. e.g.: @label: -- 0 do goto label do @label: -- 1 end @label: -- 2 end Does the goto jump to 0, 1, 2, or is this a compilation error? -- ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ───── http://www.cowlark.com ───── │ "I have always wished for my computer to be as easy to use as my │ telephone; my wish has come true because I can no longer figure out │ how to use my telephone." --- Bjarne Stroustrup
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