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How do you give functions private variables that retain their values between calls?


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“Perl regular expressions match the longest string possible”. What is the name of this match?

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What is the difference between having a parenthesis after module name and without parenthsis after module name?? i.e Package::Module(); and Package::Module;

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I have one question regarding to eval function. I know eval function is use for error checking but I am not able to understand below line. eval \'exec perl -S $0 ${1+\"$@\"}\' if 0; $0 for script name $@ set if error occur

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