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Remove Duplicate Lines
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Remove Duplicate Lines
Strip duplicate lines from a list, with optional trimming and case folding.
Trim whitespace
Remove empty lines
Ignore case
Keep original order
Input
Output: 0 unique, 0 removed
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Guides that cover this
Sorting and deduplicating a list without surprises
Why "10" sorts before "2", how umlauts change places between Germany and Sweden, which duplicates really count as duplicates, and why a random comparator is a biased shuffle.
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