Russ has asked for the wisdom of the Perl Monks concerning the following question:

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I want to have a regex that searches for data (hi | lo) and end at a "°F" sign in between that are digits.I want to match this. hi 37°F lo 27°F. I tried this... 

if($info =~ /(hi|lo)\s+[-]\d{1,3}°F/i){
    ...#do crapppppp
}

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It isn't working.. HELP! thanks

Replies are listed 'Best First'.
Re: How to set a delimiter. (Moved from Q&A)
by chromatic (Archbishop) on Dec 09, 2000 at 12:02 UTC
    I'm not sure what the character class with the hyphen in there is for. Do you want to capture the temperatures, too? If so, here's what I'd try: 
    if ($info =~ /(hi|lo)\s+(\d{1,3}).F/i) {
    # do something with $1 and $2
}

    [download]
    You were on the right track... but the square brackets puzzle me.

    Update: jlp suggests that temperatures may be negative, in which case it makes lots of sense. Here's the revision to allow that: 

    if ($info =~ /(hi|lo)\s+(-?\d{1,3}).F/i) {
    # do something with $1 and $2
}

    [download]
    The ? means the hyphen may or may not be present. If it is, it will be grouped with the digits and stored in $2.
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[d/l]
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Re: How to set a delimiter. (Moved from Q&A)
by I0 (Priest) on Dec 14, 2000 at 17:24 UTC
    Were you trying to say [-+]?
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[d/l]

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