Real Classy
不太懂标题是何意（
Haskell Catamorphic
Functional Programming on Lists map: transform [a] to [f(a)] 12-- 函数签名map :: (a -> b) -> [a] -> [b] filter 1filte...
Haskell 基础语法
Local Definition 可以定义临时变量 where 语法 1234circleArea :: Double -> DoublecircleArea r = pi * rsquare where pi = 3.14...
Haskell 里的数据类型
Lists Lists are used to store multiple values of the same type. List Operations 这些操作并不修改原列表的值，返回的是其 copy. 1234567891...