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什么是 db time
AWR中有 DB time这个术语,那么什么是DB time呢? Oracle10gR2 官方文档 给出了详细解释(Oracle10gPerformance Tuning Guide 5.1.1.2 Time Model Statistics) The most important of the t
分类:数据库   时间:2016-02-02 16:45:50    阅读次数:315
UVA 3890 Most Distant Point from the Sea(二分法+半平面交)
题目链接:http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=11358 【思路】 二分法+半平面交 二分与海边的的距离,由法向量可以得到平移后的各边,半平面交在特定精度判断是否有交集。 【代码】 1 #include<cmath>
分类:其他好文   时间:2016-02-02 08:39:13    阅读次数:192
python中的数字
python支持的数字类型:-整形(标准整形)、长整形、布尔型、双精度浮点型、十进制浮点型和复数 显式删除数字对象: >>> num=3 >>> print num 3 >>> del num >>> print num Traceback (most recent call last): File
分类:编程语言   时间:2016-02-01 18:12:42    阅读次数:151
bower 安装网络错误
npm install -g bower报错: $ npm install -g bower npm ERR! network getaddrinfo ENOTFOUND npm ERR! network This is most likely not a problem with npm itse
分类:其他好文   时间:2016-02-01 17:49:27    阅读次数:376
96 Stocks APIs: Bloomberg, NASDAQ and E*TRADE
Our API directory now includes 96 stocks APIs. The newest is the Eurex VALUES API. The most popular, in terms of directory page views, is the Bloomber
分类:Windows程序   时间:2016-02-01 02:16:10    阅读次数:396
CFSocket
Socket: CFSocket: Sockets are the most basic level of network communications. A socket acts in a similar manner to a telephone jack. It allows you to
分类:其他好文   时间:2016-01-28 16:50:13    阅读次数:172
11. Container With Most Water
用two pointers夹逼的方法,刚开始把left和right设置在数组的两端,如果left处比right处矮,那么说明left处是瓶颈,否则就是right处是。 同时维护一个全局的maxArea 1 public int maxArea(int[] height) { 2 if(height
分类:其他好文   时间:2016-01-28 08:17:06    阅读次数:126
Load PE from memory(反取证)(未完)
Article 1:Loading Win32/64 DLLs "manually" without LoadLibrary() The most important steps of DLL loading are: Mapping or loading the DLL into memory.
分类:其他好文   时间:2016-01-27 19:27:14    阅读次数:306
[转]SQL SERVER – Find Most Expensive Queries Using DMV
转自:http://blog.sqlauthority.com/2010/05/14/sql-server-find-most-expensive-queries-using-dmv/ The title of this post is what I can express here for thi
分类:数据库   时间:2016-01-27 19:23:39    阅读次数:191
Identifiers
IdentifierAnidentifieris an arbitrarily long sequence of digits, underscores, lowercase and uppercase Latin letters, and most Unicode characters (disa...
分类:其他好文   时间:2016-01-26 16:32:20    阅读次数:282
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