"Notes" 1th, 2 speaking: SQL overview

Brief notes:View Current User:Sql> Show UserUSER is "SYS"To view the dba_users data dictionary:Sql> desc dba_usersName Null? Type----------------------------------------- -------- ----------------------------USERNAME not NULL VARCHAR2 (30)USER_ID

SQL_DML Simple operation

Statement ************************************************************** *********Original works, from the "Blue Blog" blog, Welcome to reprint, please be sure to indicate the source, otherwise hold the copyright legal responsibility.Deep Blue

Cocos2d-x Action notes

一  基本概念   1. CCAction是动作类的基类 ,所以动作都派生自这个类,它创建一个对象代表一个动作。动作作用于CCNode,因此任何一个动作都是有CCNode来执行         实例1.   一个图片从一点1秒时间移动到另一点 Size visibleSize = Director::getInstance()->getVisibleSize();    Vec2 origin = Director::getInstance()->getVisibleOrigin();auto

Batch Processing genie in Cocos2d-X

使用普通方法实现批处理精灵 在Sprite.h中添加下面的代码 #ifndef __Sprite_SCENE_H__#define __Sprite_SCENE_H__#include "cocos2d.h"USING_NS_CC;class Sprite : public CCLayer{public: //初始化层 bool init(); //创建场景 static CCScene* scene(); //响应触摸 bool

Code Nong's product Thinking Training Section 4th ---- listen to the user's hunger, but do not follow the instructions in "Everyone is a product manager"

夜深了,本来应该睡觉,本来今天发的贴子也够多。但是,学习有一种惯性,一旦启动,很那停下来,一旦停下来,变得懒惰也很难再继续。 总结一下苏杰的2.3“听用户的但不要照着做”的只是内容。 1 明确我们存在的价值 1.1 用户需求VS 产品需求 用户需求:用户自以为的需求,并且经常表达为用户的解决方案。 产品需求:经过我们分析,找到的真正需求,并且表达为

Codeforces round #271 (Div. 2)

A题:因为数据量太小,所以直接暴力替换就好。。。。 #include #include #include #include #include #include using namespace std;typedef long long ll;int arr[100010];int cnt[100010];int col[100010];int n,a,b;char c;string s = "qwertyuiopasdfghjkl;zxcvbnm,./";int main(){

Differences between cocos2d-x3.0 and 2.0

区别1.去CC 之前2.0的CC**,把CC都去掉,基本的元素都是保留的 2.0CCSprite CCCallFunc CCNode ..3.0Sprite CallFunc Node .. 区别2.cc***结构体改变 2.0 ccp(x,y) ccpAdd(p1,p2)ccpSubccpMultccpLength(p)ccpDot(p1,p2);ccc3()ccc4()ccWHITECCPointZeroCCSizeZero3.0Point(x,y)

Section 3rd-Kano model introduction "Everyone is a product manager"

满意度的二维模式 满意度是用户对产品感知的效果与期望值相比较后,用户形成的开心或失望的感觉。在日常满意度应用中,我们都认为满意度是一维的,即某个产品(页面),提供更多功能、服务时用户就会感到满意,相反,当功能、服务不充足时,用户会感到不满。因此我们可能会不断在产品(页面)中添加新功能,通过这种方式提升用户的满意度。但是事实上会发现,并不是所有新增或优化的功能,都能提升用户的满意度,甚至有一些还会损害用户体验。 满意度理论研究中发现,并非所有的因素对用户满意度产生的影响都是一维的,二维模式认为,当

Description of isset

zhanhailiang 日期:2014-10-08 今天遇到一个很奇怪的bug,测试如下: 查了下手册说明: Example #2 isset() on String Offsets PHP 5.4 changes how isset() behaves when passed string offsets.   Output of the above example in PHP 5.3: bool(true)bool(true)bool(true)bool(true)bool(true)

Chapter 1 of Data Structure-Implementation of linear tables

#include#include#include#define LIST_INIT_SIZE 100#define LISTINCREMENT 10#define OVERFLOW -2#define ERROR 0#define OK 1using namespace std;//typedef int Status;typedef struct{ int *elem; //指向整个线性表的基址 int length; //当前长度 int listsize;

The simplest FFMPEG-based Encapsulation Format processing: video/audio multiplexing (muxer)

tag: ffmpeg mux multiplexing encapsulation打算记录一下基于FFmpeg的封装格式处理方面的例子。包括了视音频分离,复用,封装格式转换。这是第3篇。 本文记录一个基于FFmpeg的视音频复用器(Simplest FFmpeg

Hadoop pseudo-distribution Installation

1.1 设置ip地址   执行命令  service network restart   验证  ifconfig 1.2 关闭防火墙   执行命令  service iptables stop   验证  service iptables status 1.3 关闭防火墙的自动运行(永久关闭)   执行命令  chkconfig iptables off   验证  chkconfig --list | grep iptables 1.4 设置主机名   执行命令  (1)hostname

Smart Home DIY plan

        工作了这么长时间了,感觉自己目前的工作内容很不利于技术水平的提升,对此状况,我心里深感不踏实。因此,我决定利用下班时间,边学习边做,做一套真正可用的智能家居系统,首先部署到自己居住的房间。 对此智能家居系统,我的大致构想如下: 1,采集房间的温度、湿度、光照强度、煤气浓度等数据,并将采集的数据通过智能家居网关传送到自建的web服务器,以供

Raspberry Pi Study Notes (3): Remote Control of Raspberry Pi using VNC

转载请注明:@小五义http://www.cnblogs.com/xiaowuyi      等了一个十一假期,新买的B+终于到了。按照前两节的方法,重新安装了操作系统。 一、添加国内软件源 Raspberry Pi(树莓派)国内软件源:(http://www.linuxidc.com/Linux/2013-10/91012.htm) 修改配置文件: [email protected] ~ $ vi /etc/apt/sources.list   deb

HDU 3152 obstacle course (priority queue, extensive search)

题目   用优先队列优化普通的广搜就可以过了。     #include#include#includeusing namespace std;#includestruct pq{ int x,y,val; friend bool operator b.val; }};priority_queue q;int xx[4]={0,0,1,-1};int yy[4]={1,-1,0,0};int n;int mp[130][130],vis[130][130];int i,j,

Question about the longest non-repeated substring

题目描述:Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters for "abcabcbb" is "abc", which the length is 3. For "bbbbb" the longest substring is "b", with

Unigui trial notes (6)

uniGUI提供了一个文件上传控件TUniFileUpload,进行数据的导入就变得比较容易。首先将TUniFileUpload控件放置在窗体上,按下导入按钮后,执行TUniFileUpload的文件上传功能: procedure TfmeWebDBListEditBase.btnImportClick(Sender: TObject); begin inherited; { 执行文件上传 } fuMain.Execute; { 启动Mask,显示文件上传过程 }

Insert an image into word, embedded, and not all images can be displayed.

    Solution:It turns out that the line spacing of the section attribute where the image is located is set to "fixed value". Do not set it to a fixed value. 1. Select the context of the image you want to insert, right-click the image, and select "

O & M notes-snmp installation Configuration

O & M notes-snmp installation Configuration In the new project, you need to enable the snmp service for the monitoring machine to collect data for monitoring when deploying the server. The requirements are as follows: 1. Specify a collection

O & M notes-one-click lnmp Installation

O & M notes-one-click lnmp InstallationInstallation Package Introduction: Install the specified software as needed. Nginx is installed in/usr/local/nginx by default, and the startup script is in/usr/local/nginx/conf/nginx; php is installed

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