[Haskell-cafe] Re: [Haskell] I18N, external strings

[Bulat Ziganshin]

Hello Johannes,

Wednesday, November 15, 2006, 10:36:10 AM, you wrote:

> What methods and tools are there for i18n of Haskell programs?

> In Haskell, I see at least two problems:
> a) reading the file is in IO

if you need utf8 and other encodings support, you can use Streams lib:

  h <- openFile "test" ReadMode >>= withEncoding utf8

http://haskell.org/haskellwiki/Library/Streams


> b) there are no "global variables". implicit parameters perhaps?

there is a sort of global vars:

ref_command  =  unsafePerformIO$ newIORef$ error "undefined ref_command"

uiStartCommand command = do
  writeIORef ref_command command
  ..

uiStartProcessing filelist = do
  command <- readIORef ref_command
  ..

but implicit parameters, of course, are more intelligent approach
  


-- 
Best regards,
 Bulat                            mailto:Bulat.Ziganshin at gmail.com