对haskell的类型系统，还有一个困惑。
haskell是静态类型，所以会有这样一个问题 class A t where   funA :: t -> IO () instance A W where   funA w = do     …
Haskell 局部函数的类型申明问题
出自 RealWorldHaskell 一练习题: Chapter 4, 97页， 第7题 原题是用 foldr 写 takeWhile。  假如我这样写（初写haskell, 代码不如C写来漂亮…
Commercial Users of Functional Programming (CUFP) 2009视频
http://cufp.galois.com/2009/report/report.html 《Real World Haskell》的作者之一Bryan O'Sullivan做的 Keynote…
pattern matching 代码顺序影响运行的效率吗？
代码如下？factorial1 0 = 1factorial1 (n+1) = (n+1) * factorial1 n复制代码factorial2 (n+1) = (n+1) * factorial2 nfactorial2 0 = 1复制代码 以…
[Haskell] ANNOUNCE: GHC version 6.12.1
==============================================================    The (Interactive) Glasgow Haskell Compiler -- version 6.12.1  …
[三道贩子] Haskell Weekly News: Issue 96
Haskell Weekly News: Issue 96 - December 6, 2008 http://sequence.complete.org/hwn/20081206 这周有意思的东西不少 Haskell haikus. Gwern Branwe…
请教 haskell 中的一个问题
1. 统计一个文件的行数 2. 代码如下: import IO     main = do         l <- countLineFile "d:/downloads/putstr.hs&…
[三道贩子] Haskell Communities and Activities Report (15th ed., November 2008)
Haskell Communities and Activities Report (15th ed., November 2008) 报告主页：http://www.haskell.org/communities/ 报告本身：http://www.haske…
newtype 问题?
type Parser a = GenParser Char () a newtype GenParser tok st a   = Text.ParserCombinators.Parsec.Prim.Parser (State tok st   &nb…
