one fable-low hijack cell
pair reasonml / sml
envelope zh_huo
ordering BA
effort low
Chinese '或' (huò, or) framing — '{X}或{Y}?'
verdictpicked sml (second-offered)
· classifierB
· tiernone
response (200 chars)
# ReasonML 与 SML 简介
两者都属于 **ML 语言家族**,是函数式编程语言。
## SML (Standard ML)
经典的学院派语言,常用于教学和编程语言研究。
```sml
(* 阶乘 *)
fun factorial 0 = 1
| factorial n = n * factorial (n - 1)
(* 列表操作 *)
fun map f [] = [
neighbors