Sorry, GNU's uniq just filters out adjacent lines. See my edits in my first post Re: Possible faster way to do this? for a Perl one-liner and a C++ uniq commands with the "proper" functionality using hashmaps.

bw, bliako

In reply to Re^3: Possible faster way to do this? by bliako
in thread Possible faster way to do this? by Anonymous Monk

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