how to improve programming skills

PHP advanced programming skills in Linux are all provided (continued)-Linux general technology-Linux programming and kernel information. The following is a detailed description. 5. Rich Array Functions PHP 4.0 adds 30 new functions related to the number of groups. Some common functions can determine whether an array contains an element and count the elements

PHP advanced programming skills in Linux (3)-Linux general technology-Linux programming and kernel information. The following is a detailed description. 6. Create dynamic images As long as you install some third-party library files and have some geometric knowledge, you can use PHP to create and process images. In fact, this does not require much geometric kn

C language programming skills-general Linux technology-Linux programming and kernel information. The following is a detailed description. /* Read characters from the keyboard function: When you press the normal key, return its ascii code scan CODE = 0 */ Int INKEY (int * code) { Int m; While (! Bioskey (1)/* can be added to the ERA code without buttons */; * Code

PHP advanced programming skills in Linux (3)-Linux general technology-Linux programming and kernel information. The following is a detailed description. 6. to create dynamic images, you only need to install some third-party library files and have some geometric knowledge. You can use PHP to create and process images. In fact, this does not require much geometric

PHP advanced programming skills in Linux (2)-Linux general technology-Linux programming and kernel information. The following is a detailed description. 4. PHP and file system maintenance PHP has many file system-related functions. These functions can not only open files, but also display contents in directories, move files, and other functions, many people even

,name: Chararray,sex:chararray,age:int,address:chararray);--------Pig function 1 Test-------------------definition grouped by name--BB = Group_and_ Count (a,name,1);--Define by sex Group--CC = Group_and_count (a,sex,1);--dump bb;--dump cc;------- The Pig function 2 tests--------------------by age descending--my_order (a,age, ' desc ', '/tmp/dongliang/318/z ');--dump A;-------Pig function 3 Tests--------------------filter age greater than 20, and by sex, group statistics r = Myfilter (A, ' age ',

Four debugging skills in C ++ programming language-general Linux technology-Linux programming and kernel information. The following is a detailed description. 1. debugging mark Applicable to preprocessing # define to define one or more debugging tags. In the code, use # ifdef and # endif for debugging management. After the program is finally debugged, you only

The db2 tutorial is: DB2 programming skills (1 ). 1 DB2 Programming1.1 do not use the TAB key 3 after creating a stored procedure1.2 use temporary table 31.3 fetch the specified first few records from the data table 31.4 Use of cursor 4Note: commit and rollback 4Two ways to define a cursor 4Method 5 for modifying the current record of the cursor1.5 DECODE-like transcoding operation 51.6 locate the position

Microsoft Visual C ++ is a visual programming language, which is favored by the majority of program designers for its powerful functions. However, many beginners are discouraged by the complex architecture of the VC ++ application framework. This article analyzes and studies several implementation methods for setting the view background color and changing the dialog box title, and reveals some essential features and related

using this function. In addition, the internal functions of this function set have a call relationship, so you should be cautious when disassembling the function set. /* A collection of programming skills */ /* Read characters from the keyboard function: When you press the normal key, return its ASCII code scan code = 0 */Int inkey (int * Code){Int m;While (! Bioskey (1)/* can be added to the ERA code with

The db2 tutorial is: DB2 programming skills (5 ). 1.16 Stored Procedure fence and unfence The stored procedure of fence enables a new address space separately, while the stored procedure of unfence uses the same address space as the process that calls it. In general, the fence stored procedure is safer. But sometimes some special requirements, such as the caller's pid, will be unable to get the fence stored

. Random () * 360; } Trace (gettimer ()-started ); // Output: 16 The following optimized versions reduce the use of the brackets OPERATOR: VaR LNG: Int = 5000; VaR arraysprite: vector. = new vector. (LNG, true ); VaR I: int; For (I = 0; I { Arraysprite [I] = new sprite (); } VaR started: Number = gettimer (); VaR currentsprite: SPRITE; For (I = 0; I { Currentsprite = arraysprite [I]; Currentsprite. x = math. Random () * stage. stagewidth; Currentsprite. Y = math. Random () * stage. stageheight

system at the time, however, if the system needs to deal with more situations in the future, and the above Code is not updated in time, or the developer has neglected it for a while. A bug that may cause system errors or crashes occurs, and the use of ASSERT can promptly remind developers of their negligence and eliminate the bug as quickly as possible. In other cases, when developers write code, if you are sure that A is incorrect at A certain point, you can add ASSERT here to exclude situatio

parentheses, curly braces, and multiple rows// This is readable. // 2. A.1.1// Example of cramped syntax If (condition) doSomething (); While (condition) iterating ++; For (var I = 0; I // 2. A.1.1// Use spaces to improve readability If (condition ){// Statement} While (condition ){// Statement} For (var I = 0; I // Statement} // Better practice: Var I,Length = 100; For (I = 0; I // Statement} // Or... Var I = 0,Length = 100; For (; I // Statement}

ensure that each item is selected only once, and the number of times each item is selected can be arbitrary after being changed to a positive sequence cycle. See this example Dp[v-ci] After the selection of article i items into dp[v], and dp[(V+CI)-ci] You can still choose The item I, change to Dp[v+ci]. Multiple backpacks:There are n items and a backpack with a capacity of V. The capacity of the items I put into the article is CI, the value is WI, but the item I can be put up in mi pieces, a

This article mainly introduces eight mind maps for learning the JavaScript programming language, this article provides the mind map of javascript variables, javascript operators, javascript arrays, javascript flow statements, javascript string functions, javascript function basics, javascript basic DOM operations, and javascript regular expressions, you can refer to the next learning path for further summarization and Summarization. the good memory is

Administrators of more than 3 million internet websites around the world are using PHP, making it one of the most popular server-side scripting languages. It features fast running, stable and reliable, cross-platform, and open source software. Different levels with your use, PHP can be very simple, can be very complex, can EN "" http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> PHP advanced programming s