Wolfram Function Repository
Instant-use add-on functions for the Wolfram Language
Function Repository Resource:
Convert uppercase letters to lowercase and vice versa
ResourceFunction["SwapCase"][string] converts uppercase letters in string to lowercase and vice versa. |
Swap the cases in a string:
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SwapCase automatically threads over a list of strings:
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SwapCase can be programmed by using LowerCaseQ or UpperCaseQ and the functions ToUpperCase and ToLowerCase:
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The implementation of SwapCase is many times faster, though:
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For nearly all strings, SwapCase is an involutory function:
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There are a few exceptions:
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Some strings will get longer after swapping cases:
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