On Wed, 2004-10-27 at 20:07, S.A. Birl wrote:
> On Oct 27, [EMAIL PROTECTED] ([EMAIL PROTECTED]:
>
> Brian:
> Brian: If you want to make sure they are alternating like <><><> etc... I would do
> Brian: this:
> Brian:
> Brian: $_ = $line;
> Brian:
> Brian: @syms = m/[<>]/g;
> Brian: $string = join("", @syms);
> Brian: if ($strings !~ m/^<(><)*>$/)
> Brian: {
> Brian: ## Scream here!
> Brian: }
> Brian:
> Brian: The regular expression:
> Brian:
> Brian: m/^<(><)*>$/
> Brian:
> Brian: will ensure that it starts with < and ends with > and anything in between
> Brian: will be "><" which I think should do the trick. That logic is pretty hairy
> Brian: though and I could be missing something.
>
>
>
> Wouldnt m/[<>]/g literally match <> and not <characters>?
>
> Why wouldnt it be m/[<.+>]/g ?
Brackets in a regular expression match a single character inside the
brackets. It's the RE equivalent to an OR. So m/[<>]/g will match each
instance of '<' or '>'. The match will be a single character long.
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