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Re^2: Two simple code style advice questions

by Anonymous Monk
on Jan 16, 2013 at 16:02 UTC ( #1013599=note: print w/replies, xml ) Need Help??


in reply to Re: Two simple code style advice questions
in thread Two simple code style advice questions

Not sure the point of this. If you are willing to test using exists, then why bother initializing at all? $hash{key}++ is a perfectly valid way to bring a key into existence.

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[Cosmic37]: now I have tried another blunder - can anyone explain why I am such a dunderhead?
[Cosmic37]: if ( $line =~ /$mydt/ ) { print $line; }
[Cosmic37]: I try to match successive date times stored in variable $mydt
[Cosmic37]: I guess it is searching for the string "$mydt"
[Corion]: Indeed cool, erix ;)
[Cosmic37]: rather than the value of $mydt which is a date time strong such as 2016-01-01 12:30:56
[Corion]: Cosmic37: No, but maybe $mydt doesn't contain what you think it does, or it contains characters that are special in a regular expression? Try if( $line =~ /\Q$mydt\E/) { ... for a literal match
[Cosmic37]: I mean string grrr
[Corion]: Maybe add an else branch in which you print what the values of $line and $mydt are?
[Cosmic37]: ah thank you I will try

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