Language_Haskell

基本语法

1. /= 不等于
2. 函数 doubleMe x = x + x
3. else强制
4. 函数首字母小写

List

1. ++

2. : [1,2]实际是1:2:[]

3. !!

   [1,2,3]!!2
   3
   

4. head, tail, init, last

5. length, null, reverse, take

   take 2 [1,3,2]
   [1,3]
   
   take 0 [1,2,3]
   []
   

6. maxium, sum, product(乘积), elem

   4 `elem` [4,5,6]
   true