I'm somewhat confused by wanting to identify unique words regardless of case, while still needing the case information. Perhaps that says you need two hashes - one that uses uc'd1 case, and the other using words as-is.

1 I seem to recall that upper-casing works in more encodings/languages than lower-casing, and this has nothing to do with perl. There just aren't lower-case equivalents of all upper-case characters in all languages. There are some characters which are defined to be "upper-case" even though there is no "lower-case" equivalent. If you're just dealing with English letters, then this distinction is irrelevant to you.

In reply to Re: (almost) Unique elements of an array by Tanktalus
in thread (almost) Unique elements of an array by Anonymous Monk

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