"If it were more than a few lines then processing it using Perl is almost certainly the wrong approach."

Why?

"For a file large enough to be a problem, Perl should be reading in one line at a time and loading it into a database when the desired result of getting the first occurrence becomes trivial."

False, given this sort of task perl is capable of reading a line at a time and generating the required output without first inserting each line into a database then querying it.

In reply to Re^4: How can I keep the first occurrence from duplicated strings? by marto
in thread How can I keep the first occurrence from duplicated strings? by Anonymous Monk

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