On Mon, Sep 3, 2012 at 2:27 PM, Brian Candler <[email protected]> wrote:
> Robert Klemme wrote in post #1074406:
>> irb(main):009:0> arr.map {|s| s[/(?<=#)\d+/]}
>
> ...although the positive lookbehind assertion (?<=...) is a somewhat
> esoteric feature of regexps.
I am not sure I agree on "esoteric". If you had said it is a more
recent feature, then I'd readily agree. I can name off the top of my
head at least three mainstream programming languages which support it
(Java, Ruby >= 1.9 and Perl).
> You can avoid it using the form
> String#[regexp, fixnum] to get just the captured value that you are
> interested in.
Right.
> There's certainly More Than One Way To Do It :-)
If anything, that is true. :-)
Cheers
robert
--
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