Currying in ML, Python, Javascript

ML

---

以SMLNJ为例.

- fun sum x y = x + y;
val sum = fn : int -> int -> int
- val sum2 = sum 2;
val sum2 = fn : int -> int
- sum2 10;
val it = 12 : int

Python

---

可以使用functools来实现curry

>>>from functools import partial
>>>def sum(x,y): return x + y
>>>sum2 = partial(sum, 2)
>>>sum2
<functools.partial object at 0x1f2de0>
>>>sum2(10)
12

JavaScript

---

http://www.svendtofte.com/code/curried_javascript/

node.js 学习笔记

占坑先
node.js提供一种framework使得我么可以在server端运行的javascript 如果你是一个新手,务必请先读一下这篇Understand Node.js, 写的非常非常好. 参考
一个对于新手来说很不错的tutorial http://www.nodebeginner.org
Understand node.js event loop