#reset this_array for some other operation    
     @this_array=();

[download]

Why would you reset @this_array; Why not just use @that_array for the other operation?

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
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In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re^3: Help !!! Symbolic Math Factroize Subroutine is clobbering my hash by BrowserUk
in thread Help !!! Symbolic Math Factroize Subroutine is clobbering my hash by ipreferperl

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