satoru
How to check if a Unicode codepoint represents a letter or an uppercase letter?
I’m working on the “Bob” exercise on the Elixir Track in Exercism.
I am testing for uppercase letter with this simple check: c in ?A..?Z, but one of the test cases requires that Unicode uppercase letters be handled.
I’ve Googled a little bit and couldn’t found anything useful. An answer on Stackoverflow suggested to use regular expression on the string. I wonder if there’s anything as simple as Unicode.is_upper? in the standard library.
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malaire
Perhaps check if Unicode.category/1 returns :Lu.
EDIT: Just noticed that there is also Unicode.uppercase?/1 which does this exact check.
LostKobrakai
I was about to suggest ex_unicode as well, but given the nature of this being an exercise I doubt they expect people to use an external dependency.
egze
Just a hint, I don’t think you need to check every codepoint individually, but instead try to work with the whole string input and just the String module.
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