while condition

awk commandawk [Options] '/pattern{action} 'Options-fWork Traversal mode: iteration, loopPatternDelimitation: ADDR1,ADDR2Expression: $ > 500/pattern/modebegin{}: Executes once before the traversal operation beginsend{}: After the traversal operation

Why should we develop our own php coding specifications? When we write code, a good coding specification can play a lot of undesirable effects for us. At least, it has the following benefits:1. improve our coding efficiency. Uniform Code makes it

If statement, switch statement, while loop, Do...while Loop, for Loop, Foreach Loop, break interrupt loop, continue instruction. This is demonstrated by the week function below. Three kinds of Process control structure of program 1. Sequential

9.3 Curly Braces Of the three main braces placement rules, two are acceptable, as the first of these is the best:Place curly braces at the same column below the keyword:if (condition){...while (condition){...}}The traditional Unix parentheses rule

A. String Insertion To provide maximum flexibility for developers to handle string values, PHP provides a literal insert and content insertion A method. Double quotation marks provide maximum flexibility because both the variable and the transfer

PHP specification1. Why Coding Specifications• Coding Specification (code conventions) is especially important for programmers for several reasons: 1. In the life cycle of a software, 80% of the cost is spent on maintenance. 2. Virtually no

awk: Report GeneratorDisplay information after formattingGrammar:awk [Options] ' script ' file1 file2, ...awk [Options] ' Parttern {action} ' file1 file2, ...The most common action:print,printfBasic features of awk:A. Every time you take a lineB.

Sample 1: Use the while statement for continuous computation:A =float (raw_input ("Please input a number:"))While a!=0:B=raw_input ("Please input a operator:")C=float (raw_input ("Please input another number:"))If b== "-":Print "Result:",

A String insertion To provide maximum flexibility for developers to handle string values, PHP provides a literal insert and content insertion A method. Double quotation marks provide maximum flexibility because both the variable and the transfer

This article introduces, PHP programming in the naming standard, including the basic concept, camel-style nomenclature, hump method, Pascal method, the need for friends, may wish to refer to the study.Camel-like nomenclature (also called Hump

Introduction: Grep, sed, and awk are three mainstream text processors, but they have their own advantages and disadvantages in processing. Here we will only introduce awk Awk is an excellent text processing tool. It is not only one of the most

Awk: Awk can be said to be an independent language that provides powerful functions for text processing, and can process various processing results. Now we will summarize it. Awk: Report Generator Basic syntax Awk [Options] 'signature' file... Awk

I. Judgment statement: 1. If statement: A. If (){ // Execute the statement; } B. If (){ // Execute the statement; } Else { // Execute the statement; } C. If (){ // Execute the statement; } Else if { // Execute the statement; } ...... Else { //

Basic commands Awk '{action}' input file Unconditionally execute action Awk '/pattern/{action}' input file Execute action when pattern matches Awk '(condition) {action}' input file Execute action when condition

 Author: Mu Feng In this article, I would like to introduce you to Lua program design. I suppose everyone has learned at least one programming language, such as basic or C, especially C. Because Lua is used as a script in the Host Program for the

Chapter 2 native types and Statements Tseasnmt ? 2.1 program elements ? 2.1.1 comments ? 2.1.2 keywords ? 2.1.3 identifiers ? 2.1.4 literals ? 2.1.5 operators and punctuators ? 2.2 output/Input ? 2.3 program structure ? 2.4 simple types ? 2.4.1

Java multi-thread design: Wait, y, yyall, and synchronized usage Mechanism   Wait, y, yyall, and synchronized usage mechanisms:  Synchronized(OBJ ){While(!Condition) {obj. Wait ();} obj. dosomething ();}   After thread a acquires the OBJ

1.1. While loop and do ...... While Loop Syntax format of the while loop:  While (condition) { // Execute the statement } // The Infinite Loop format of while is: While (true)  Do ...... Syntax format of the while loop:

I used to read some articles and learn more about them. I usually write a simple command combination, but I have never written complex scripts. Recently, I wrote a script to restore the data and found that the optical field does not work properly.

Who will the join thread wake up? I was asked this question on csdn and gave a detailed answer. However, the level of the questioner is different, and the ability to judge the correct answer is also different. He is not satisfied with my answer.The