使用Haskell输出一个UTF-8编码的ByteString [英] Using Haskell to output a UTF-8-encoded ByteString

问题描述

我已经设法使用<$来实现这个功能了。

我试图简单地将UTF-8编码的数据输出到控制台。 c $ c> String ，但现在我想对 ByteString 做同样的事情。有没有一种快捷的方式来做到这一点？

这是我到目前为止所做的，并且不起作用：

  import Prelude隐藏（putStr）
导入Data.ByteString.Char8（putStr，pack）
 $ b $ main :: IO（） 
 main = putStr $ packčušpajž日本语
  

打印出 uapaj〜 ， ，ugh。

我最喜欢最新的GHC 6.12.1的答案， d也喜欢听到以前版本的答案。

谢谢！

更新：只需读取并输出相同的UTF-8编码的文本行似乎正常工作。 （使用 Data.ByteString.Char8 ，我只是做一个 putStr =<< getLine 。）但是打包值从.hs文件中，如上面的例子中，拒绝输出正确...我一定是做错了什么？

解决方案

<

  utf8-string  import prelude hiding（putStr ）
 import Data.ByteString.Char8（putStr）
 import Data.ByteString.UTF8（fromString）
 
 main :: IO（）
 main = putStr $ fromString čušpajž日本语
  

I'm going out of my mind trying to simply output UTF-8-encoded data to the console.

I've managed to accomplish this using String, but now I'd like to do the same with ByteString. Is there a nice and fast way to do this?

This is what I've got so far, and it's not working:

import Prelude hiding (putStr)
import Data.ByteString.Char8 (putStr, pack)

main :: IO ()
main = putStr $ pack "čušpajž日本語"

It prints out uapaj~�,�, ugh.

I'd like an answer for the newest GHC 6.12.1 best, although I'd like to hear answers for previous versions as well.

Thanks!

Update: Simply reading and outputting the same UTF-8-encoded line of text seems to work correctly. (Using Data.ByteString.Char8, I just do a putStr =<< getLine.) But packed values from inside the .hs file, as in the above example, refuse to output properly... I must be doing something wrong?

解决方案

utf8-string supports bytestrings.

import Prelude hiding (putStr)
import Data.ByteString.Char8 (putStr)
import Data.ByteString.UTF8 (fromString)

main :: IO ()
main = putStr $ fromString "čušpajž日本語"

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