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webqq获得好友列表的hash算法，大约每个月中旬会变动一次。知道怎么获得他就可以了。
js文件路径 http://web.qstatic.com/webqqpic/pubapps/0/50/eqq.all.js
加密算法为 P=function(b,i)，有时候是 P=function(b,j)
直接打开这个文件后搜索P=function，有两个参数的就是。
把函数体拷贝下来后百度 js格式化工具，把内容放进去，格式化一下。...
介绍AlertDialog的onCreateDialog与onPrepareDialog使用方法...
union的作用很简单用来合并两条sql的结果集
语法: SQL1 UNION SQL2
现有一张价格表
要求：求出价格低于2000和价格高于3000的商品，不能用or和not between……and
思路：我们可以先求出低于2000的商品得到结果集1
再求出高于3000的商品得到结果集2
再利用union合并结果集1和结果集2
什么时候才允许使用union？
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First, a
dependency is a semantic relationship between two model elements in which a change to one element
(the independent one) may affect the semantics of the other element (the dependent on...
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A class diagram
shows a set of classes, interfaces, and collaborations and their relationships. These diagrams are the most common diagram found in modeling object-oriented systems. Class diagram...
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Both sequence diagrams and communication diagrams are kinds of interaction diagrams. An
interaction diagram
shows an interaction, consisting of a set of objects or roles, including the messages ...
java 日期和字符串互转，根据当天整天时间 得到当天最后一秒的日期时间...
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An artifact diagram
shows the physical constituents of a system on the computer. Artifacts include files, databases, and similar physical collections of bits. Artifacts are often used in conjunct...