洋葱数学技术博客

MongoDB Performance Optimization

2015-04-23

MongoDB真的遇到性能瓶颈了吗? 对于查询优化,还可以做到哪些?

##关于服务器硬件

MongoDB使用内存映射文件I/O来访问数据存储,所以受到了OS以及内存大小的限制.64bit的Linux最大虚拟内存地址为128TB,而Windows对内存映射文件的限制为8TB(如果开启日志则只有4TB)

洋葱数学Android V1.2版本总结

2015-04-22

提纲

必要的趟坑
app设计结构上进一步分层

JavaScript Pretty Date

2015-04-22

pretty.js是让日期看起来”pretty”的方式,代码仅有十几行.在jQuery中调用prettyDate()也可实现相同效果.

A Visual Guide of CSS3 Flexbox

2015-04-22

flexbox is a CSS attribute to organize the webpage’s layout and responsive compatibility. Here is a visual tutorial from scotch.io that could be referenced.

sicp巫师学徒修炼之路(2)

2015-04-21

选自塞尔的红袍法师学院标准教材必修课一

写于4月16日

战斗法师

Alt text

#第二章构造数据的抽象

Creative, Reactive Reactjs

2015-04-21

Discovery is the ability to be puzzled by simple things.
by Noam Chomsky

We get indulged in the amazement and excitement of what AngularJS offers to us. Meanwhile, a group of people on the other side of the globe had began to think of its potential drawbacks, and tried to solve them.

Angular controllerAs and $scope

2015-04-19

先来看一个比较常见的问题

var myApp = angular.module('myApp',[]);
myApp.controller('parentController', function($scope){
	$scope.name = 'xiaoming';
});
myApp.controller('sonController', function($scope){
	/*no code*/
});