Front page | perl.perl5.porters |
Postings from July 2009
Aristotle Pagaltzis wrote: > * Michael G Schwern <schwern@pobox.com> [2009-07-09 23:05]: >> Yitzchak said: >>> I don't get why you'd want to do that. If I wanted to count >>> space-separated fields, I'd do: >>> >>> $count = 1 + $thing =~ y/ //; >> Yitzchak's altnerative approach is very clever but underscores >> the need for making split in scalar context just DWIM. >> Because... damn, that's how you're supposed to count fields? > > That only works if the field separator is exactly one character, > anyway. OTOH `1 + $str =~ m//g` works in the general case and is > far less unintuitive. `1 + $str =~ m//g` doesn't work at all. The match operator is empty so it will use the regular expression from the last successfull match, which will probably not match just whitespace, or else it will match between every character. But more importantly, because the match operator is used in an arithmetic expression it is in scalar context and so will return either true or false (1 or 0 in numerical context) and not the number of matches. John -- Those people who think they know everything are a great annoyance to those of us who do. -- Isaac AsimovThread Previous | Thread Next