On Sat, 13 Mar 2021 04:26:41 -0800 (PST)
Igor Silva <[email protected]> wrote:

> Current behavior
> 
> case ?a do
>   x when x in ?a..?z -> # code
>   x when x in ?A..?Z -> # code
>   _ -> # code
> end
> 
> Desired behavior
> 
> case ?a do
>   ?a..?z -> # code
>   ?A..?Z -> # code
>   _ -> # code
> end
> 
> #GoiásouVilaNova
> 

You can covert the case
case ?a do
 x when x in ?a..?z -> :lower_case
 x when x in ?A..?Z -> :upper_case
 _ -> :unknown
end


into a cond:

cond do
 ?a in ?a..?z -> :lower_case
 ?a in ?A..?Z -> :upper_case
 true -> :unknown
end

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