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python enumerate函数用法
enumerate函数用于遍历序列中的元素以及它们的下标i = 0seq = ['one', 'two', 'three']for element in seq: print i, seq[i] i += 1#0 one#1 two#2 threeprint '============'...
分类:编程语言   时间:2015-01-16 16:21:59    阅读次数:151
使用Three.js绘制一个虚拟城市
这篇文章解释了如何使用代码来编写一座3D立体“城市”。这个代码是由@ mrdoob最新发布的演示Demo。我发现这个演示的算法很优雅,是一个简单而有效的解决方案,所以我发了一个帖子解释它。关于算法的一些评论在我们将关注焦点置于问题的细节之前,把握下问题的整体和全局是很有帮助的。这个3D虚拟城市所使用...
分类:Web程序   时间:2015-01-16 12:38:29    阅读次数:5505
uva 12075
12075 - Counting TrianglesTriangles are polygons with three sides and strictly positive area. Lattice triangles are the triangles all whose vertexes h...
分类:其他好文   时间:2015-01-15 23:33:17    阅读次数:159
Python 学习笔记(一)
1、内置对象 数字 1234,3.1415, 3+4j, Decimal, Fraction 字符串 ‘spam', "guido's". 列表 [1, [2, 'three'], 4] 字典 {'food':'spam', 'taste':'yum'} 元组 (1, 's...
分类:编程语言   时间:2015-01-15 15:44:18    阅读次数:193
LeetCode--Single Number II
Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime complexity. Could you implement it without usi...
分类:其他好文   时间:2015-01-15 11:03:15    阅读次数:157
Threads vs. Tasks
Posted on Friday, October 11, 2013 .Net has three low-level mechanisms to run code in parallel: Thread, ThreadPool, and Task. These three mechanism se...
分类:其他好文   时间:2015-01-13 19:35:59    阅读次数:154
Apache Spark探秘:三种分布式部署方式比较
转自:链接地址: http://dongxicheng.org/framework-on-yarn/apache-spark-comparing-three-deploying-ways/ 目前Apache Spark支持三种分布式部署方式,分别是standalone、spark on mesos和...
分类:Web程序   时间:2015-01-13 14:02:09    阅读次数:169
UML基本架构建模--关联的术语和概念(一)
?? A relationship is a connection among things. In object-oriented modeling, the three most important relationships are dependencies, generalizations, and associations. Graphically, a relatio...
分类:其他好文   时间:2015-01-13 07:55:07    阅读次数:207
A sequence of numbers(快速求幂)
题目描述 Xinlv wrote some sequences on the paper a long time ago, they might be arithmetic or geometric sequences. The numbers are not very clear now, and only the first three numbers of each seq...
分类:其他好文   时间:2015-01-13 00:08:33    阅读次数:258
Wireshark Tcp三次握手
TCP三次握手Three-way Handshake一个虚拟连接的建立是通过三次握手来实现的1. (B) --> [SYN] --> (A)假如服务器A和客户机B通讯. 当A要和B通信时,B首先向A发一个SYN (Synchronize) 标记的包,告诉A请求建立连接.注意: 一个 SYN包就是仅S...
分类:其他好文   时间:2015-01-11 21:32:42    阅读次数:317
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