Maybe we don't need foreach ;-)
Bill Baxter
dnewsgroup at billbaxter.com
Mon Oct 30 23:47:38 PST 2006
Walter Bright wrote:
> Bill Baxter wrote:
>> But yeh, I'm sure you can cook up some example where you change one
>> comma to a semicolon and both are legal.
>
> for (a, b; c)
> for (a; b; c)
>
> Not only do they look very, very similar, it is not at all obvious which
> one was intended.
Assuming you mean literally a b and c, it's pretty clear it's got to be
a foreach that was intended. There's no reason to stick a variable in
either the first or last clause of a standard for.
Here's a example where the intent really isn't obvious:
for (int a; b;)
for (int a; b)
Anyway, given that
* I myself have been guilty of using ',' where I meant ';' in for loops,
* 'in' can't be used in place of ';' due to syntactical ambiguities,
I agree that it's safer and better to have foreach separate.
--bb
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