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simple file diff’ing

October 22nd, 2008

ever wanted to find the difference between two files – as in lines contained in one but not the other?  probably not.  but if you ever found yourself in such a situation you might find this little tool handy.

It will take two text input files, and give two outputs – one containing lines found in in1 but not in2, and vice-versa.  It accepts drag-drop for files and should be quite performant (two lists of 10,000 lines takes around 100ms on a p4 3ghz).  It should also scale quite well.

This was a 10-minute coding challenge.

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