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413. 数组切片 Arithmetic Slices
A sequence of number is called arithmetic if it consists of at least three elements and if the difference between any two consecutive elements is the ... ...
分类:编程语言   时间:2017-01-19 02:51:14    阅读次数:249
with补充知识点
import threading,queue,time import contextlib @contextlib.contextmanager def fun(list_1,val): list_1.append(val) try: yield finally: list_1.remove(val... ...
分类:其他好文   时间:2017-01-15 17:01:41    阅读次数:141
MVC源码解析 - HttpRuntime解析
先看一张图, 从这张图里, 能看到请求是如何从CLR进入HttpRuntime的. 一、AppManagerAppDomainFactory 看到这张图是从 AppManagerAppDomainFactory 开始的, 按照汤姆大叔博文中所说, 是在CLR初始化加载的时候, 来加载这个类的. 那么 ...
分类:Web程序   时间:2017-01-12 09:42:48    阅读次数:207
Min Stack
Implement a stack with min() function, which will return the smallest number in the stack. It should support push, pop and min operation all in O(1) c ...
分类:其他好文   时间:2017-01-10 10:13:00    阅读次数:146
python----------进程、线程、协程
进程与线程 什么是进程(process)? An executing instance of a program is called a process. Each process provides the resources needed to execute a program. A proce ...
分类:编程语言   时间:2017-01-09 16:00:41    阅读次数:319
[luogu2964][USACO09NOV][硬币的游戏A Coin Game]
题目描述 Farmer John's cows like to play coin games so FJ has invented with a new two-player coin game called Xoinc for them. Initially a stack of N (5 <= ...
分类:其他好文   时间:2016-12-28 01:44:15    阅读次数:141
解决程序出现“terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc Aborted (core dumped)”的问题
最近跑程序时出现了这么一个问题: 出现此问题一般都是数据量太大,同时跑太多程序造成的,比如我经常会同时打开十多个终端界面,跑不同的脚本,就容易出现这种问题。解决方法很简单,不要同时跑这么多程序,一个个跑。 ...
分类:Windows程序   时间:2016-12-27 14:14:11    阅读次数:3120
How To Use FETCH_RECORDS In Oracle Forms
When called from an On-Fetch trigger, initiates the default Form Builder processing for fetching recordsthat have been identified by SELECT processing... ...
分类:数据库   时间:2016-12-25 23:54:13    阅读次数:488
337. House Robber III——树的题目几乎都是BFS、DFS,要么递归要么循环
The thief has found himself a new place for his thievery again. There is only one entrance to this area, called the "root." Besides the root, each hou ...
分类:其他好文   时间:2016-12-25 23:44:20    阅读次数:211
自定义 scrapy 爬虫的 requests
之前使用 scrapy 抓取数据的时候 ,默认是在逻辑中判断是否执行下一次请求 比如: 今天无意查看了 scrapy 的官方文档,可以使用 start_requests() 这个方法循环生成要爬取的网址 使用 python 一定要简单粗暴,于是把我把之前代码换了如下方式 注意:要注意的是重写 sta ...
分类:其他好文   时间:2016-12-24 17:07:58    阅读次数:292
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