Question

例如，当我运行简单代码时，我已经安装了Cro模块：

 my %headers = {Authorization => OAuth realm="", oauth_consumer_key="xxxxxxxxxxxxxxxx", oauth_nonce="29515362", oauth_signature="KojMlteEAHlYjMcLc6LFiOwRnJ8%3D", oauth_signature_method="HMAC-SHA1", oauth_timestamp="1525913154", oauth_token="xxxx-xxxxxxxxxxxxxxxxxx", oauth_version="1.0", User-Agent => Cro};

 my $resp = await Cro::HTTP::Client.get: 'http://api.fanfou.com/statuses/home_timeline.json',
     headers => [
            user-agent   => 'Cro',
            content-type => 'application/json;charset=UTF-8',
            |%headers
     ];

 say $resp.header('content-type'); # Output: application/json; charset=utf-8;
 my Str $text = await $resp.body-text();

它说'无法解析媒体类型application/json; charset=utf-8;

Died with the exception:
    Could not parse media type 'application/json; charset=utf-8;'
      in method parse at /Users/ohmycloud/.perl6/sources/5B710DB8DF7799BC8B40647E4F9945BCB8745B69 (Cro::MediaType) line 74
      in method content-type at /Users/ohmycloud/.perl6/sources/427E29691A1F7367C23E3F4FE63E7BDB1C5D7F63 (Cro::HTTP::Message) line 74
      in method body-text-encoding at /Users/ohmycloud/.perl6/sources/427E29691A1F7367C23E3F4FE63E7BDB1C5D7F63 (Cro::HTTP::Message) line 83
      in block  at /Users/ohmycloud/.perl6/sources/F870148C579AB45DEB39F02722B617776C3D6D5F (Cro::MessageWithBody) line 49

似乎application/json; charset=utf8;不是有效的content-type，所以我添加了一个测试：

use Cro::MediaType;
use Test;

sub parses($media-type, $desc, &checks) {
    my $parsed;
    lives-ok { $parsed = Cro::MediaType.parse($media-type) }, $desc;
    checks($parsed) if $parsed;
}

parses 'application/json; charset=utf-8;', 'application/json media type with charset', {
    is .type, 'application', 'Correct type';
    is .subtype, 'json', 'Correct subtype';
    is .subtype-name, 'json', 'Correct subtype name';
    is .tree, '', 'No tree';
    is .suffix, '', 'No suffix';
    is .Str, 'application/json; charset=utf-8;', 'Stringifies correctly';
};

done-testing;

输出是：

not ok 1 - application/json media type with charset
# Failed test 'application/json media type with charset'
# at cro_media.pl6 line 6
# Could not parse media type 'application/json; charset=utf-8;'
1..1
# Looks like you failed 1 test of 1

源代码似乎位于/Users/ohmycloud/.perl6/sources/5B710DB8DF7799BC8B40647E4F9945BCB8745B69文件中，我在';'?令牌后添加TOP：

token TOP { <media-type> ';'? }

保存，然后再次运行我的代码，但错误是一样的。那么如何让变革发挥作用呢？在Perl 5中，我可以编辑我的.pm模块，但在Perl 6中，我不知道该怎么做。

Answer 1

正如jjmerelo所提到的，安装是不可变的，一个解决方案是下载源代码（包括META6.json文件），编辑你想要的代码，然后：

do {
    try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord)
         do {
                try AVAudioSession.sharedInstance().setActive(true)
            } catch let error as NSError {
                print (error)
            }
        } catch let error as NSError {
            print (error)
        }

对于简单测试，对我来说没问题。

至于zef install . --/test无法解析，我在application/json; chartset=utf-8;的 ; 令牌中添加了MediaType.pm6，可以包含token（也许它是一个错误，我不知道）：

在本地安装，现在解析好了。

如何在使用zef安装后在模块中编辑源代码？

1 个答案: