[GHC] #14061: reflection

[GHC]

#14061: reflection
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        Reporter:  zaoqi             |                Owner:  (none)
            Type:  feature request   |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Runtime System    |              Version:  8.0.2
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by zaoqi):

 Replying to [comment:7 winter]:
 > 对于帮助类的问题，还请使用 Haskell-cafe 邮件组（对于初学者相当友好）。或
 者去知乎、segmentfault这样的网站（尤其是中文类的问题），Ghc trac主要是用来
 反馈 bug 或者提出特性需求的，所以如果你还是认为 GHC 存在 bug 的话，请解释
 你希望你的程序做什么，仅仅贴出代码的话我们很难给出解释，于是你也会很难理解
 。
 我需要能判断是否有`instance Eq a`，在运行时。

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14061#comment:8>
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