On Wed, Jun 15, 2016, at 07:19, Rustom Mody wrote:
> I thought there'd be many examples for showing that break is just goto in
> disguise... Evidently not
>
> So here is an example in more detail for why/how break=goto:
>
> http://blog.languager.org/2016/06/break-is-goto-in-disguise.html
So?
So are loops. So is any "if" statement whose body isn't itself a
one-line goto. Showing that break can be written as a goto is
uninteresting because _any_ form of flow control can be written as a
goto, and in particular it does not establish that break is in any way
less structured than any other constructs that have keywords.
C's for loop:
for(i=0;i<n;i++)
{ body...; }
is syntactic sugar for:
i=0;
loop: body;
inc: i++;
if(i<n) goto loop;
end: ;
[break within body -> goto end;]
[continue within body -> goto inc;]
if(x) true_body; else false_body;
is syntactic sugar for:
if(!x) goto else;
true_body;
goto end;
else: false_body;
end: ;
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