hi i don't understand this part of code

 my @match = grep $uniq1{$_}, @words; what i understand : here we search for $uniq1{$_} in @words

we know that @words contain the current line, but $uniq1{$_} what does it contain? and if $uniq1{$_} contain the line of the file N°1 how to browse(iterate) it and how to change from a value to another

In reply to Re^12: compare two text file line by line, how to optimise by thespirit
in thread compare two text file line by line, how to optimise by thespirit

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