Your use of 'strict' is an excellent practice. However, declaring all your variables at the start of your file defeats much of the advantage. You should declare each variable in the smallest possible scope. (Strict will usually tell you if place a declaration in to small a scope or if you try to use a variable that is out of scope.) This style makes it nearly impossible to accidentally use data left over from a previous iteration or from elsewhere in your program. When you are debugging a problem with a variable, you can be certain that the error occurs in the block where it is declared.

Consider an example from your code. It appears that you are storing stale values of $x1, $x2, etc. in your hash. Even if it is not a problem, you must disprove it. If those variables were declared inside the loop, the question would never arise.

Bill

In reply to Re: how to push multiples row of values into hash and do comparison by BillKSmith
in thread how to push multiples row of values into hash and do comparison by darkmoon

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