The only thing I regret is that matching non greediness has not been made the default.

Non-greediness is only useful if you have something following the non-greediness. For example, /(\d*)/ would not be useful at all: it would always succeed, matching and capturing an empty string. /(\d+)/ would be equivalent to /(\d)/, because a non-greedy expression doesn't take more than the absolute minimum.

If you use non-greedy quantifiers now, think about the efficiency that is gained by re-writing for greediness. Suppose you have /"(.*?)"/ - it can be written as /"([^"]*)"/, which is much more efficient. With backtracking disabled, as jryan did in his example (with the new : meta character), it's even more efficient (in case the subject string is not well formed).

- Yes, I reinvent wheels.
- Spam: Visit eurotraQ.


In reply to Re: Perl6: too bad non-greediness is not made the default by Juerd
in thread Parsing with Perl 6 by jryan

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":