Re: string_lower producing atoms

On 11 March 2014 13:53, Michael Hendricks <[email protected]> wrote:

>
> It looks like string_lower/2 is using a slightly more general definition
> of "string" which includes both string objects and atoms.  For example, you
> can also provide an atom as the first argument.
>
> Since we already have downcase_atom/2, I can't think of any reason why
> we'd want string_lower/2 to behave this way.
>

But it doesn't accept a list of codes, which could also be considered a
string.

If we did want a predicate "make this lowercase no matter what kind of
string it is", the correct behaviour would surely be to produce the same
kind of string as output.

-- 
Peter Berry <[email protected]>
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