Song Zhang
Song Zhang
是fst，好像没有问题。
谢谢你的反馈，的确错了。定义成fastFib x = fst $ fibPair x跟 fst . fibPair都是正确的，我会在下一版中改正。
是多余的，谢谢你指出来~
谢谢，已经在勘误表上改正。x := 这里强调是赋值。 Date: Thu, 5 Jun 2014 16:42:11 -0700 From: [email protected] To: [email protected] Subject: Re: [Introduction_to_Haskell] 发现的书中一些错误 (#1) P18, 程序 x := x - 1 对吗？ 常规不是写成 x =...
 It seems that I encountered the same problem.
BTW, this issue also trapped me.
I did not think this very carefully. I just extend `everythingBut` by lifting `(r, Bool)` to `m (r, Bool)`. Similarly applied to `everythingWithContext` function too. > Why can't the context...
I think this looks more complicated and need to bring `mtl` library into syb.