Chas, Sorry but I am not clear on what you mean by reduce? Do you mean remove all non numbers from the array?
Thanks! jlc -----Original Message----- From: Chas Owens [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 18, 2007 4:31 PM To: Joseph L. Casale Cc: Xavier Noria; beginners@perl.org Subject: Re: Convert Scientific Notation to decimal equivalent On 7/18/07, Joseph L. Casale <[EMAIL PROTECTED]> wrote: > Interesting, > I see from your regexp you use a \A and \z, from Perldoc this means: > \A Match only at beginning of string > \z Match only at end of string Is "foo10bar" valid? /^$RE{num}{real}$/ says no, but /$RE{num}{real}/ says yes. \A and \z are similar to ^ and $, but are not effected by the m and s flags (which is not an issue in your case since you are splitting on whitespace). > > I am not sure I understand this requirement? > > In my case, I am checking an array of 3 scalars. Does this make sense: > next unless @data =~ /$RE {num}{real}/; > Does the regexp know to evaluate each element in the array implicitly? > Or do I need to tell it this? Not in Perl 5 (Perl 6 will have the smart match operator ~~). If you want to bail if any of the values in @data are not numbers then you should say next if grep { not /^$RE{num}{real}$/ } @data; Or if you want to reduce @data to just the numbers next unless my @num = grep { /^$RE{num}{real}$/ } @data; -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] http://learn.perl.org/
