I have a few more questions from reading Learning Perl 3.. In the following example I understand that it's saying "anything that says fred and/or barney in the line should be put in uppercase letters like FRED or BARNEY". What I don't understand is what $1 is doing in all of this or what /gi is doing. I *think* g means to search and replace the whole word so it won't match manfred, or somethine along those lines. 
  
$_ = "I saw Barney with Fred";
s/(fred|barney)/\U$1/gi;

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In the next example I have a question on efficiency. I know sometimes joining is the only option to add things betweens characters. But if the solution is as simple as this couldn't you just write my $x = "4:6:8:10:12"; ? That would remove the useless need of join and a lot of messy commas. 
my $x = join ":", 4, 6, 8, 10, 12;

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Thanks for your help everyone.

"Age is nothing more than an inaccurate number bestowed upon us at birth as just another means for others to judge and classify us"

sulfericacid

In reply to Learning Perl 3 questions (misc) by sulfericacid

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