Truncate string without substr or length

spivey49 has asked for the wisdom of the Perl Monks concerning the following question:

Given a vairable legnth string like "4.3.25" or "1.4.3.25" I need to truncate the ".25", preserving the "4.3" or "1.4.3".

I've been using substr and length for a quick and dirty cludge, but I'd like to replace it with a single regex. Any suggestions?

Comment on Truncate string without substr or length

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Re: Truncate string without substr or length by moritz (Cardinal) on Oct 16, 2008 at 17:51 UTC
`$str =~ s/\.\d+$//;` [download] See perlretut for a gentle introduction to regexes. That removes the last period followed by a number, at the end of the string. If you only want to remove `.25`, use `s/\.25//` instead.	[reply] [d/l] [select]
Re: Truncate string without substr or length by ikegami (Patriarch) on Oct 16, 2008 at 17:54 UTC
substr and length? substr and rindex! `$s = substr($s, 0, rindex($s, '.'));` [download] The regexp equivalent is `$s =~ s/\.[^.]*$//;` [download]	[reply] [d/l] [select]