Functional Programming.

标签：depend   ati   bsp   output   als   effect   not   input   check   

I have been seeing Redux for sometime, but recently I come to realize that , it‘s part of so called functional programming.

The basic idea for functional programming is so simple, 

• Declare all dependency as function input, no hidden input ( we should not directly used data in shared scope without passing it to input ).
• Return something ! We should not just manipulate data in shared scope inside function, instead, return something as result.

By doing these, we are creating a pure function , which doesn‘t have any side effect on shared scope.

The cons of this also comes quite obvious.

• The functions no longer mess around with shared scope, it‘s easier for people to work on same part.
• It‘s so simple to review code, by just examining input and output, one can know what the function does.
• It‘s even easier for testing. As we are using pure functions, we don‘t have to mock shared data any more.  Give input and check output, that‘s all.

Functional Programming.

标签：depend   ati   bsp   output   als   effect   not   input   check   

原文地址：http://www.cnblogs.com/fdyuestc/p/6896667.html