Re: [Haskell-cafe] Re: how to use a literal string with bystring useAsCString

2009/2/9 Colin Adams :

2009/2/9 minh thu :

...

Anyway, I'd like to get my utf-8 string to C but in ascii (or latin1).

How can do this ?

You can't (in general). If the data just happens to be ascii, then your utf-8 string will BE ascii (there is no way to tell the difference). If it just happens to be in the range of latin-1(all codepoints 0-255), then you have to convert it to latin-1. But otherwise, you are stuck.

That's what I thought, but in the code attached before, the output of the program is not what is expected, i.e. I have : 0xb7d7e018 0xb7d7e040 Why ? Thu