做项目得用数据吧,拿去.... 1.Data.gov搜索   美国政府去年承诺使所有政府数据都能在网上免费获得.这个网站是第一阶段,作为一个门户网站,囊括了从气候到犯罪的一切惊人的信息.   2. 美国人口普查局搜索   一个关于美国公民生活的丰富信息,包括人口数据,地域数据以及教育.   3. 欧洲联盟开放数据门户搜索   如上所述,但它是基于欧洲联盟机构的数据.   4. Data.gov.uk搜索   来自英国政府的数据,包括<英国国家书目>--自1950以来所有的英国书籍以及出版物的元…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Ninth Week Summary of Key Concepts A heap is a complete binary tree in which each element is greater than or equal to both of its children. Adding an element to a hea…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Seventh Week Summary of Key Concepts A tree is a nonlinear structure whose elements are organized into a hierarchy. The order of a tree specifies the maximum number o…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Fifth Week Summary of Key Concepts A collection is an object that gathers and organizes other objects. Elements in a collection are typically organized by the order o…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Second Week Summary of teaching materials Searching is the process of finding a designated target within a group of items or determining that it doesn't exist. An eff…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The First Week Summary of teaching materials Algorithm analysis is the basic project of the computer science. Increasing function prove that the utilization of the time a…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Eleventh Week Summary of Key Concepts In hashing, elements are stored in a hash table, with their location in thetable determined by a hashing function. The situation…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Tenth Week Summary of Key Concepts An undirected graph is a graph where the pairings representing the edges are unordered. Two vertices in a graph are adjacent if the…

20162314 2017-2018-1 <Program Design & Data Structures>Learning Summary Of The Eighth Week Summary of Key Concepts A binary search tree is a binary tree in which, for each node, the elements in the left subtree are less than the parent, and the…

data=47.0 编译器编译后,程序总共需要占用47字节的片内RAM空间.注意这个大小仅仅是累加而已,并未考虑各个块之间的空隙,也就是说实际占用的RAM空间可能多于此数值.xdata=0 程序未使用片外RAM(映射)空间code=3092 编译器编译出的各个代码块总共大小为3092字节.与前面的data一样,由于各个块之间可能存在空隙,因此实际生成的代码大小可能多于此数值.…

I joined Analytics Vidhya as an intern last summer. I had no clue what was in store for me. I had been following the blog for some time and liked the community, but did not know what to expect as an intern. The initial few days were good – all the in…

Tool GDB Examining Memory (data or in machine instructions) You can use the command x (for “examine”) to examine memory in any of several formats, independently of your program's data types. x/nfu addr x addr x n, the repeat count The repeat count is…

虚拟内存探究 -- 第四篇:malloc, heap & the program break http://blog.coderhuo.tech/2017/10/19/Virtual_Memory_summary/    翻译  虚拟内存  翻译 这是虚拟内存系列文章的第四篇,也是最后一篇.本文主要介绍malloc和heap相关知识,以便回答上一篇文章结尾提出的一些问题: 动态分配的内存为何不是从堆的起始位置0x2050000开始,而是偏移16个字节从0x2050010开始?这16个字节是什么用…

竞态条件 race condition Race condition - Wikipedia https://en.wikipedia.org/wiki/Race_condition A race condition or race hazard is the condition of an electronics, software, or other system where the system's substantive behavior is dependent on the sequ…

前段时间在公司给大家分享GO语言的一些特性,然后讲到了并发概念,大家表示很迷茫,然后分享过程中我拿来了Rob Pike大神的Slides <Concurrency is not Parallelism>,反而搞的大家更迷茫了,看来大家丢了很多以前的基本知识.后来我就把Pike大神的slide和网上的一些牛人关于Cocurrency和Parallelism的观点做了整理,最终写了本文. 在Rob Pike的<Concurrency is not Parallelism>(http:/…

网上有关SUBMIT实现程序调用的例子稍显复杂,而相关的参考和解释则不是很完善.本文给出一个SUBMIT的小示例程序(代码见文末),实现了最简单的程序间调用及返回值,以及SAP官方文档中相关内容的翻译.解释. 本文链接:http://www.cnblogs.com/hhelibeb/p/5802398.html 转载请注明 SUBMIT - 参考 语法 SUBMIT {rep|(name)} [USING SELECTION-SCREEN dynnr] [VIA SELECTION-SCREEN…

Attribute是c#的语言特性 msdn说明如下: The Attribute class associates predefined system information or user-defined custom information with a target element. A target element can be an assembly, class, constructor, delegate, enum, event field,interface, method,…

Ubuntu环境 使用二进制安装包安装,相对简单绿色 1.到官网下载二进制压缩包http://dev.mysql.com/downloads/mysql/ 2.选择需要的版本 目前最新为5.7.之后选择 Linux - Generic (glibc 2.5) (x86, 64-bit), Compressed TAR Archive 可以选择下载到本地,之后上传到需要安装的linux系统,或者使用wget直接在linux系统中下载安装包. 3.建立用户和目录 #groupadd mysql #u…

我通常使用MS Excel来存储和处理大量数据,但有时候经常会碰到一个问题—我需要的数据存储在word表格中,而不是在Excel中,这样处理起来非常麻烦,尤其是在数据比较庞大的时候, 这时我迫切地需要将word表格中的数据导入到Excel中.相信大家也碰到过同样的问题,下面我就给大家分享一下在C#中如何使用免费控件来实现这一功能.这里,我使用了两个免费API, DocX和Spire.Xls. 有需要的朋友可以下载使用.下载地址: DocX:codeplex官网 Spire.Xls: E-iceb…

Process program program==code+data; 一个进程可以对应多个程序,一个程序也可以变成多个进程.程序可以作为一种软件资源长期保存,以文件的形式存放在硬盘 process: 相应的程序+CPU上下文+一组系统资源 动态性, 独立性, 并发性 一个CPU,任何时刻最多只能有一个进程去使用它 process VS thread 进程的资源分配的基本单位,是分配资源的抽象:进程把一组相关资源组合起来,构成了一个资源平台,或者说资源环境,包括运行上下文,内存地址空间,打开的文…

There are commonly three types of memories in a PIC Microcontroller, Flash Program Memory, Data Memory (RAM) and EEPROM Data Memory. We write Programs in the Flash Program Memory of a microcontroller. Flash memory makes it possible to program a micro…

首先要看看目前Nagios的主配置路径下有哪些文件.[root@nagios etc]# ll总用量 152-rwxrwxr-x. 1 nagios nagios 1825 9月  24 14:40 cgi.cfg-rwxrwxr-x. 1 nagios nagios 9747 9月  24 14:40 checkcommands.cfg-rwxrwxr-x. 1 nagios nagios 1089 9月  24 14:40 connectors.cfg-rwxrwxr-x. 1 nagios…

1.新增文件组 ALTER DATABASE [Test] ADD FILEGROUP FG2010 ALTER DATABASE [Test] ADD FILEGROUP FG2011 ALTER DATABASE [Test] ADD FILEGROUP FGAll 2.新增分区文件 ALTER DATABASE [Test] ADD FILE (NAME='File2010',FILENAME=N'D:\Program Files\Data\File2010.ndf') TO FILEGR…

一.引言: 在storm发布到0.9.x以后,配置storm将会变得简单很多,也就是只需要配置zookeeper和storm即可,而不再需要配置zeromq和jzmq,由于网上面的storm配置绝大部分都是0.9以前的storm版本,所以有很多工作是不需要进行的,下面就storm的0.9.5版本在linux环境下进行配置进行详细解析. 由于配置storm只需要两个步骤,大大简化了配置,也是storm团队做了很大的努力,让程序员们专注于程序,让storm配置进行异常简单,好了,废话说了不少,下面正…

Question  81You are designing a custom administrative timer job for a SharePoint 2010 farm. You need to design a storage plan for the program configuration data that meets the following requirements:.The configuration data in the storage location mus…

阅读目录: 1.开篇介绍 2.程序书签(代码书签机制) 2.1ProgramBookmark 实现(使用委托来锚点代码书签) 2.2ProgramBookmarkManager书签管理器(对象化书签集合的处理,IEnumerable<T>书签管理) 3.可恢复语句组件(将语句对象化) 3.1可恢复语句组件管理器(将可恢复语句视为普通的对象成员,IEnumerable<T>可恢复语句组件) 3.2可恢复语句组件运行时(Program CLR(简介)) 3.3可恢复语句逻辑配置(规则的…

By brant-ruan Yeah, I feel very happy When you want to give up, think why you have held on so long. Just fight. Somebody may ask you: Why would you want to do that? Yeah, because I want to know how it works. Assembly language programming is about mem…

使用方法: 1.安装mongodb 2.配置环境变量 mac下: export PATH=/Users/sunbey/Documents/learn/mongodb/mongodb-osx-x86_64-/bin:$PATH 3.新建data\db文件夹 4.运行mongod -dbpath "C:\data"指向文件夹 5.新开cmd,运行mongo操作数据库 操作: show dbs  注:显示数据库 use 数据库名  注:操作数据库 show collections  注:显示…

好习惯要坚持,这是我第二篇博文,任务略重,但是要坚持努力!!! 1.竞争条件 首先,我们回顾一下<Java核心技术卷>里讲到的多线程的"竞争条件".由于各线程访问数据的次序,可能会产生讹误的现象,这样一个情况通常称为"竞争条件". 那么,讹误具体是怎么产生的呢?本质上,是由于操作的非原子性.比如,假定两个线程同时执行指令 account[to] += amount;该指令可能会被处理如下: 1)将account[to]加载到寄存器. 2)增加amount…

引用来自: http://ssms.cs2c.com.cn/otrs/pc.pl?Action=PublicFAQZoom;ItemID=11741 文章主要意思是: 1. page in/out操作指把块设备中的页读入内存或把内存中的页写入块设备 When ever program or data needs to be accessed and is read in from its permanent location on disk, this is called a page in r…