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Re^3: Get unique fields from file

by tybalt89 (Monsignor)
on Jan 07, 2022 at 04:49 UTC ( [id://11140234]=note: print w/replies, xml ) Need Help??


in reply to Re^2: Get unique fields from file
in thread Get unique fields from file

Yep. I couldn't tell if what was wanted was "unique in row", "unique in column" or "only singletons in column", so I just thought I'd toss something out there.

I do have a solution that takes practically no memory (uses external sort -u), but I'll wait to see responses to the proposed answers first.

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Re^4: Get unique fields from file
by Marshall (Canon) on Jan 07, 2022 at 10:33 UTC
    I see that we both had the same interpretation issue...

    As far as sort -u goes, I didn't know if the OP is on Windows, Unix or other platform. There is supposed to be an undocumented sort switch on Win10: sort /UNIQ, but I didn't bother to test that. This can be done in another way in the new PowerShell, but I didn't worry about that either. I also circled back to "what the heck does unique mean?".

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