On 07/19/2013 09:51 PM, Dave Angel wrote:
On 07/19/2013 09:04 PM, Devyn Collier Johnson wrote:
<snip>
Chris Angelico said that casefold is not perfect. In the future, I want
to make the perfect international-case-insensitive if-statement. For
now, my code only supports a limited range of characters. Even with
casefold, I will have some issues as Chris Angelico mentioned. Also, "ß"
is not really the same as "ss".
Sure, the casefold() method has its problems. But you're going to
avoid using it till you can do a "perfect" one?
Perfect in what context? For "case sensitively" comparing people's
names in a single language in a single country? Perhaps that can be
made perfect. For certain combinations of language and country.
But if you want to compare words in an unspecified language with an
unspecified country, it cannot be done.
If you've got a particular goal in mind, great. But as a library
function, you're better off using the best standard method available,
and document what its limitations are. One way of documenting such is
to quote the appropriate standards, with their caveats.
By the way, you mentioned earlier that you're restricting yourself to
Latin characters. The lower() method is inadequate for many of those
as well. Perhaps you meant ASCII instead.
Of course not, Dave; I will implement casefold. I just plan to not stop
there. My program should not come across unspecified languages. Yeah, I
meant ASCII, but I was unaware that lower() had some limitation on Latin
letters.
Mahalo,
DCJ
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