in reply to Sorting/Cleansing a Duplicate File

Hi,

Your code looks OK to me, but you don't really need this line: 

if (!exists $countries{$_})

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in your code, the hash will remove duplicates without that.

Concerning your other question, this is not exactly a code checker, but the use of the: 

use warnings;

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pragma will definitely help you finding a number of common errors and possibly dangerous or deprecated constructs.

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Re^2: Sorting/Cleansing a Duplicate File
by perlron (Pilgrim) on Oct 25, 2014 at 14:43 UTC
    thanks . u mean the value will get re-assigned every time ? i wil check this.. thats a good one.!
    Do not wait to strike when the iron is hot! Make it hot by striking - WB Yeats
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      Yes, it will be reassigned every time, but you don't care, do you? And at the end, the keys of your hash will be unique.
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