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Re^2: while loop, search & replace

by Anonymous Monk
on Oct 01, 2004 at 18:42 UTC ( #395699=note: print w/replies, xml ) Need Help??

in reply to Re: while loop, search & replace
in thread while loop, search & replace

Thank you for your help. I'm still learning what "scalar" means. That solved my problem though. Cheers. PJT

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scalar vs list context
by ikegami (Pope) on Oct 01, 2004 at 19:12 UTC
    $a = something; # something is executed in a scalar context. @a = something; # something is executed in a list context. something; # something is executed in a void context. # Arrays return their number of elements in a scalar context: @b = qw( a b c ); print( @b , "\n"); # abc print(scalar(@b), "\n"); # 3 # print accepts a list, but scalar() forced scalar context. # Arithmetic forces scalar context: print(@b,"\n"); # abc print(@b."\n"); # 3 # Not just string arithmetic: print(@b, "\n"); # abc print(@b+0, "\n"); # 3 # Functions can examine their context: { local $, = ", "; local $\ = "\n"; print( localtime ); # 59, 14, 15, 1, 9, 104, 5, 274, 1 print(scalar(localtime)); # Fri Oct 1 15:05:32 2004 } # Refer to wantarray in perlfunc.

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[ovedpo15]: consider the following format of strings: some_data-doesn't- matter,value. how I get the value with regex? it should be after the last comma (last string)
[Corion]: Text::CSV_XS for all your CSV file parsing needs. Other than that, what problems do you have with perlre, and capturing everything after the comma? Also, index and substr would also work.
[choroba]: my ($value) = $string =~ /.*,(.*)/

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