old code

Turn from: http://www.cnblogs.com/charley_yang/archive/2010/12/15/1907384.html A first to fourth use Use one: Define a type of alias, not just a simple macro substitution. Can be used as multiple objects that declare a pointer type at the same time.

My answer is, more than two else if, or switch for more than two case. But is it normal to use a lot of if else and switch case in your code? Wrong! Most of the more than two of the if else and switch case should not appear as hard coded (hard-coded)

(Note: This article in the reprint of the same time make a small number of changes. ） The Qdialog display has two functions show () and exec (). Their differences are explained in the reference documentation as follows: Show ():Displays a modeless

parsing Linux Patch The main purpose of patch is to patch the code, fix known bugs, or debug the problematic code as a debugging tool, identify the problem, and verify the result of the correction.Patch process is divided into three major steps:

Why do you need to overload the Serialversionuid property in some Java classes? Which means that you write a property inside the class. eg Private static final long serialversionuid = -1575386983723846021l; (General eclipse will automatically

20 years of wind and rain: 20 programming experience accumulated by predecessors Url:http://blog.sina.com.cn/s/blog_6ede15b10100njj2.html Jonathan Danylko, author of Jonathan Danico, is a freelance web architect and programmer who has more than 20

ADO Caching a Query Last month, we had a quick look at how to do Select, insert, and update in ADODB. If you are a novice on ADODB, I suggest that you read the last month's article first. ADOdb has a lot more advanced features, and this month,

VS2010 version of the launch, a lot of bright spots, in addition to the new features on the expansion, that is, in the three languages c#,c++,visual basic on the basis of the addition of the fourth largest language F #, in the in-depth aspects of

"Teacher Zhu's IoT lecture" study notes Study Address: www.zhulaoshi.org The first two sections of the teacher said a word, I forgot to write up, today to fill. SoCs are basically read-write control of peripherals through similar gpio, memory

Second, the grammar For a long time, VB has been ridiculed by some people because of its lack of perfect object-oriented support, lack of efficient error handling mechanism and poor performance. Vb. NET will completely change this situation. However,

Recently, this topic has been in the "newsgroups" (er, at least in a lot of blogs), I have been thinking about how to reply to everyone ... But in fact, I have no need to reply at all, because Dave Totzke has done it for me. He mentioned one point

Order Paged Query:The old code executes the query data sequentially and calculates the total number of records, but if the conditions are complex (such as the associated child table), the time to query is more than 20s Public

A few months ago I received a new development task to add new features to an old web page. In the development process found that the old code has a lot of common inappropriate writing, combined with these questions, how to write better, more

1. Although C + + is mainly a new language developed on the basis of C, she is not a substitute for C, it is not an upgrade of C, C + + and C are brotherly relations. No one is more advanced than the saying that the more important point is C and C +

Situation: Recently learned the old code, found the application memory, and then the pointer to the thread callback function, but never found the place to release. So write below the small demo to learn under. #include "stdafx.h" #include

First, DDL Compatibility Specification (prevent the table structure changes, the original SQL execution error)You can only add fields or modify field lengths (field lengths are larger), cannot modify field names and types, and cannot delete

1. Although C + + is mainly a new language developed on the basis of C, she is not a substitute for C, it is not an upgrade of C, C + + and C are brotherly relations. No one is more advanced than the saying that the more important point is C and C +

Source: quiet so far √ TuanUser Rights Management create user command:' username ' @ ' host ' identified by ' password ';Description: User name created by usernamehost specifies on which host the user can log on, if localhost is available to the

What is an annotation (Annotation):　　Annotation (note) Is that Java provides a way and a way for an element in a meta-program to correlate any information with any metadata (metadata). annotion (annotation) is an interface that a program can use to

Linux general technology-Linux programming and kernel information-Privilege Escalation Vulnerability in Linux2.6. For details, refer to the following section. No matter what machines (Debian, Ubuntu), as long as the kernel version is 2.6.17 to 2.6.24