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RegEx + vs. {1,}

by Sewi (Friar)
on Oct 10, 2012 at 11:03 UTC ( #998200=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
    perl -le 'print $x = "abcdefgxxabcdefgzzabcdsjfhkdfab"; print $2 if $x
    + =~ /((\w+).*?\2.*?)+/;'
    abcdefgxxabcdefgzzabcdsjfhkdfab
    ab
    
  2. or download this
    perl -le 'print $x = "abcdefgxxabcdefgzzabcdsjfhkdfab"; print $2 if $x
    + =~ /((\w{2,}).*?\2.*?)+/;'
    abcdefgxxabcdefgzzabcdsjfhkdfab
    abcdefg
    
  3. or download this
    perl -le 'print $x = "abcdefgxxabcdefgzzabcdsjfhkdfab"; print $2 if $x
    + =~ /((\w{2,}?).*?\2.*?)+/;'
    abcdefgxxabcdefgzzabcdsjfhkdfab
    cd
    

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Node Type: perlquestion [id://998200]
Approved by marto
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[erix]: we should really dupm the lot, but I got no say in the matter :)
[LanX]: yeah its a religious mafia , the only two big calvinist houses are dutch and prussian. ..
[LanX]: choroba yes
[erix]: Utrecht has a beautiful old center, and less mass-tourism than Amsterdam
[erix]: next time, drop by :)
[LanX]: religion is also the reason how the house of Hanover aquire the English throne, all other candidates on succession where catholics...
[erix]: Henry VIII has a lot to answer for :P
[LanX]: erix sure next time you miss a conference nearby we drop by ...
[LanX]: did you even go to the Dutch Perl Workshop in Utrecht?
[erix]: haha ok. I'm going to Glasgow though, and make a long road trip round the isles

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