Erlang和二进制西里尔 [英] Erlang and binary with cyrillic
问题描述
我需要能够使用二进制与他们西里尔字符。我试着只是写<为code>＆LT;＆LT;абвгд＆GT;方式＆gt; ，但我得到了一个错误badarg
I need to be able to use binaries with Cyrillic characters in them. I tried just writing <<"абвгд">> but I got a badarg error.
我如何与西里尔字母（或单向code）字符串在二郎山工作？
How can I work with Cyrillic (or unicode) strings in Erlang?
推荐答案
如果您想输入上图中的前$ P $在二郎壳 pssion，请阅读 UNI code 模块的用户手册。
功能 character_to_binary 和 character_to_list 都是可逆的功能。下面是一个例子：
If you want to input the above expression in erlang shell, please read unicode module user manual.
Function character_to_binary, and character_to_list are both reversable function. The following are an example:
(emacs@yus-iMac.local)37> io:getopts().
[{expand_fun,#Fun<group.0.33302583>},
{echo,true},
{binary,false},
{encoding,unicode}]
(emacs@yus-iMac.local)40> A = unicode:characters_to_binary("上海").
<<228,184,138,230,181,183>>
(emacs@yus-iMac.local)41> unicode:characters_to_list(A).
[19978,28023]
(emacs@yus-iMac.local)45> io:format("~s~n",[ unicode:characters_to_list(A,utf8)]).
** exception error: bad argument
in function io:format/3
called as io:format(<0.30.0>,"~s~n",[[19978,28023]])
(emacs@yus-iMac.local)46> io:format("~ts~n",[ unicode:characters_to_list(A,utf8)]).
上海
ok
如果你想使用 UNI code：characters_to_binary（上海）直接在源$ C $ C，这是一个有点复杂。你可以尝试先找到差异。
If you want to use unicode:characters_to_binary("上海"). directly in the source code, it is a little more complex. You can try it firstly to find difference.
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