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How to replace the string within a string

by Anonymous Monk
on Feb 03, 2001 at 05:18 UTC ( #56175=perlquestion: print w/replies, xml ) Need Help??
Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I want to replace <P> in my string. I have to search for the <P> and replace it with space. Thanks

Title edit by tye, dropped a "g"

Replies are listed 'Best First'.
Re: How to replace the string withing a string
by coolmichael (Deacon) on Feb 04, 2001 at 02:02 UTC
    $_="I want to replace <P> in my string. I have to search for the <P> a +nd replace it with space. Thanks"; s/<P>/ /gi; print;
    results in:
    I want to replace in my string. I have to search for the and repla +ce it with space. Thanks
    update: You might also want to try perldoc perlre which explains regular expressions fairly well.
Re: How to replace the string withing a string
by MeowChow (Vicar) on Feb 03, 2001 at 05:20 UTC
    s/<P>/ /g

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[Corion]: Meh. I'm now on Firefox 57 ("Quantum") and again have to remove Pocket, and reinstall the adblocker, uMatrix (because NoScript doesn't work) and silence the about:blank page to not download crap from the internet
[Corion]: Maybe I shouldn't update software ...
[ambrus]: Corion: my guess is to first read the start of the file to check what format it is out of two or more possibilities, then rewind it and handle it differently depending on the program
[ambrus]: s/program/format/
[Dumu]: ambrus: it's about testing a file for being multiple possible file formats
[ambrus]: In particular, you might want to detect the encoding of a HTML file from between utf-16 versus ascii-based and encoding given in a META tag.
[ambrus]: Dumu: it should probably be safe to change the encoding if you rewind first with seek $file, 0, 0 first
[Dumu]: ambrus: good guess. I'm trying to contribute to a CPAN module, and the existing tests assume they're looking at text files
[Dumu]: ambrus: thank you. I was seeking afterwards. I'll seek first.
[jedikaiti]: Hello, Dumu!

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