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PERL; input string has a $ sign...what to do?

Mr. Flibble · 2007-03-06 20:45:57

I'm trying to extract the number '2' in the line "Blinds are now $1/$2" using regular expressions in perl. I'm running into problems because of the $ sign, it being the symbol used to denote variables in perl. Anyone know how I can get around this problem? edit: think I've got it. Stick extra quotes around it.

06-03-2007 08:45PM

#1

Mr. Flibble

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I'm trying to extract the number '2' in the line "Blinds are now $1/$2" using regular expressions in perl. I'm running into problems because of the $ sign, it being the symbol used to denote variables in perl.

Anyone know how I can get around this problem?

edit: think I've got it. Stick extra quotes around it.

0

Comments

#2 06-03-2007 10:38PM
daymobrew

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You can always backslash the $ symbol to tell the regex engine that you mean it literally.
if ( /Blinds are now \$1/\$(\d)/ ) { $TheNumberTwo = $1; # == 2. }

0
#3 06-03-2007 10:43PM

Mr. Flibble

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The string is not generated by me, its passed externally - so I can't add the slashes without it knowing where the $s are.

0