Which feature of perl provides code reusability?
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Explain the execution of a program in perl.
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 $@ set if error occur
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What does `$result = f() .. g()' really return?
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