Label:------------------------------------------------------------------------------------author:htl258 (Tony)--Date:2010-06-25 22:23:18--Version:microsoft SQL Server (RTM)-10.0.1600.22 (Intel X86)--Jul 9 2008 14:43:34--Copyright (c) 1988-2008

### PL/SQL Code authoring rules

Tags: PL/sql1. Naming rules for identifiers When you use identifiers in PL/SQL to define variables, constants, the identifier name must begin with a character and cannot exceed 30 characters in length. In addition, to improve the readability of the

### Leetcode's LRU Cache

Tags: leetcode javaDesign and implement a data structure for Least recently Used (LRU) cache. It should support the following operations: get and set .get (key)  -get the value ('ll always be positive) of the key if the key ex Ists in the

### Inter-process communication mechanism

Label:Note: Most of the articles in this classification from the "Deep analysis of the Linux kernel source code" a book, and other reference information such as "Complete analysis of the Linux kernel", "Linux C programming One-stop learning", and so

### Introduction to the algorithm of the ten (11 chapters Hash list 11.1-4 large Array for direct addressing method of the dictionary operation)

Tags: Introduction to algorithms large Array direct addressing hash table hash11.1-4 topics:We want to implement a dictionary on a very large array by using direct addressing. Initially, the array may contain some useless information, but it is not

### (DS "Algorithmic Competition Primer Classic") LA 3027 corporative Network (querying the distance between a node and the root node)

Label:Main topic:Querying the distance between a node and the root nodeProblem Solving Ideas:Weighted and check set problem. The previous topic was "to see if two or more nodes are under the same set", and now the topic is "Query a node toThe

### Bzoj 2877 NOI2012 Magic Checkerboard Two-dimensional line segment tree

Tags: bzoj bzoj2877 Two-dimensional segment tree segment tree Tree set treeTopic: Given a matrix, two operations are supported:1. Increment each value in a sub-matrix by one number2. GCD of all numbers in a sub-matrix is known all ask constant over

### Scope Chain Scope Chain

Label:object.prototype.x = 10; var w = 20;var y = 30; Console.log (x); (function foo () { var w = ten; var x = +; With ({z:50}) { console.log (w, x, Y, z);//+, ten, +, + console.log (this.x, THIS.W);//, cons Ole.log (WINDOW.W); 20})

### Selenium Action

Label:Mouse click actionThere are several types of mouse click events:Listing 1. Left mouse button clickactions = new Actions (driver), Action.click ();//left mouse button in the current position to do a click Operation Action.click

### TCP/IP Connection status

Label:1. Establish Connection Agreement (three handshake)(1) The client sends a TCP message with a SYN flag to the server. This is the message 1 in the three-time handshake process.(2) server-side response to the client, this is the 2nd message in

### Tableau Cluster deployment

Label:As the company crashed at the end of the two-month tableau server overload, there was an idea to build a Tableau server cluster. It's still in beta, so do one step at a time.Directory:I. Installing and configuring a worker serverTwo. Other

### Makefile Analysis of U-boot

Tags: makefile u-boot samsung ARM9By the top-level makefile file, comb the U-boot compilation process.Tips:in large makefile, it is often necessary to determine the value of a variable , and a small method is:$(Shell echo "Variable0_val =$

### How semaphores work

Label:First, the kernel-related files are include/linux/semaphore.h and kernel/semaphore.cSecond, the main structural body:struct semaphore {raw_spinlock_tlock;unsigned intcount;struct list_headwait_list;};Structure member variable interpretation:1,

### qsort function Usage

Label:Qsort Features: Sorting using the quick sort routines　Usage: void qsort (void *base, int nelem, int width, int (*fcmp) (const void *,const void *));Parameters: 1 The number of elements to be sorted in the first address of the array 2 array 3

### Overview Design Manual

Label:Transfer from http://www.cnblogs.com/beijiguangyong/archive/2010/09/26/2302822.htmlOverview Design Manual1 Introduction ... 21.1 Writing purposes ... 21.2 Background ... 21.3 Definition ... 21.4 References ... 22 overall design ... 22.1

### The predicate in English

Label:The predicate in EnglishHttp://baike.baidu.com/link?url=hRs3fnNWu2nooKZUtwIsULAHCzII3LEXONCS2fbnjnPl738DFwnTO2r-agiRLL1w1EzV29F4z48oXR2UjpyUPqA predicate is a statement or description of the action or state of a subject.,Point out "What" does "

### gcc/Cross-compiling

Label:1.linux GCC contains the C + + compiler, GCC and CC are the same, C + + and g++ are the same, the general C program is compiled with GCC, C + + program is compiled with g++.2.linux GCC application: Direct compile generates a.out file-o

### Gets the date before the current date (after) x days

Label:Package com.xcfh.util;Import java.text.ParseException;Import Java.text.SimpleDateFormat;Import Java.util.Calendar;Import Java.util.Date;/**** @ClassName: Beforeorafterdate** @Description: Gets the date before (after) x days before the current

### Yield statement

Label:Since the first version of C #, using a foreach statement makes it easy to iterate over a collection. In c#1.0, creating enumerators still requires a lot of work. C#2.0 added a yield statement to facilitate the creation of the enumerator. The

### Assignment 23 indefinite integral of several kinds of special functions

Label:(1)\[\begin{aligned}\int \frac{x}{x^2+2x-3}dx= \int \frac{x-1+1}{(x+3) (x-1)}DX= \int \frac{1}{x+3} + \frac14 \frac{4}{(x+3) (x-1)} DX\\=\int \frac{1}{x+3} + \frac14 \frac{(x+3)-(X-1)} {(x+3) (x-1)} DX= \int \frac{3/4}{x+3}-+ \frac{1/4}{x-1}

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