how to use while

Core points:1, the lock object must be the same. the 2, Wait (), and notify () methods must be methods that invoke the lock object, not this (thread). 3, in the multi-production and more consumption of attention to use Notifyall instead of notifyall,

Sharing ubuntu and windows systems is one of the ways users like to use, while MySQL is a small relational database management system, which is often used in combination with WAMP on Windows platforms, in Linux, LAMP is often used in combination.

Oracle PLSQL uses the while LOOP instance program in the cursor Oracle PLSQL uses the while LOOP instance program in the cursor DeclareCursor emp_cur is select * from emp;V_emp emp % rowType;BeginOpen emp_cur;While emp_cur % notfound -- while

There are three ways to make a terminating thread.1. Use the exit flag to cause the thread to exit normally, that is, the thread terminates when the Run method completes.2. Use the Stop method to forcibly terminate the thread (this method is not

int rand7() { return rand()%7+1; } int rand10(){ int x=0; do { x=(rand7()-1)*7+rand7(); } while(x>40); return x%10+1;} Analysis: To ensure the even distribution of rand10 () on integers 1-10, you can construct a

Take the String concatenation function as an example strcat. Prototype: extern char * strcat (char * DEST, char * SRC );Usage: # include Function: add the SRC string to the end of DeST (overwrite '\ 0' at the end of DEST) and add' \ 0 '.Note:

Find out the difference between for and while, and write out the memo. Script: File =/home/hadoop/phrases.txt for content in 'cat $ {file} 'Do phrase = 'echo $ {content}' echo $ phrasedone The phrases.txt file contains the following content:

From: http://blog.csdn.net/furturerock/article/details/6850634View Code 1 int rand7() 2 { 3 return rand()%7+1; 4 } 5 6 int rand10() 7 { 8 int x=0; 9 do10 {11 x=(rand7()-1)*7+rand7();12 }13 while(x>40);14

Through the shell example to learn the syntax of the loop structure: the so-called useful is to learn to use it all the time. It is useless if you forget it. On the other hand, it is very likely that the leaders have great expectations for you. So

Article title: Linux_FAQ 7: programming problems. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Q: Why can't

Dark Horse Programmer:Java Training, Android training, iOS training,. NET TrainingJava Threading-synchronized DetailedI. Overview of synchronized1, mutual exclusion between threads, must use the same monitor (an object)2. The role of synchronized:

php7.1 new Features 1. Nullable (Nullable) type The type declaration of the parameter and the return value can be ? marked as empty (null) by adding a question mark () before the type name. Indicates that the type of the function parameter or return

About foreach output $ Sql1 = "select * from y_cate order by asc "; $ Result1 = mysql_fetch_array (mysql_query ($ sql1 )); Var_dump ($ result1 ); Foreach ($ result1 as $ ke => $ ){ Echo $ ." "; } ?> I want to use foreach to output all the data in

Own a personal entrepreneurship, to do a national user-oriented, featured personalized review site. Requires quick and easy to use, while requiring the same hardware, supporting more concurrent PV. PHP Framework Laravel 5.1 or CodeIgniter 3, there

Check_user_login (); Check whether the user is logged in $db->createcon (); Establish a connection//$user =$_session["user"]; $user = "Libero"; The test temporarily uses//executes the User data table to select the user data $sql_

To update the database, use while to read all the data in the database to text. how can I change the data in text and update all the text data to the database: database update problems Use while to read all the data in the database to text. how can

Setting up Nodejs+express Web development framework under Ubuntu 2012-12-27 15:06 Author: nodejsnet Source: Site view: 2,966 readsI want to comment no comment font size: Big smallAbstract : This article summarizes the articles written by

Tag: sys lin Blank alt while loop DNA ack BSP catchThis article focuses on the use of the wait () method in Java multi-threading with the Notify ()/notifyall () Method.The ①wait () and Notify/notifyall methods must be used in a synchronous code

Recently in the preparation of job interview questions, so found a lot of information, and self-organized related to the possible examination. Try to send an article every day.1. MultithreadingImplementation method:First, inherit the thread, rewrite

I've never been able to understand when a condition needs to be tested in the run () method of a thread, why use while instead of if, until you see this simple example, finally understand ....The example is this:There are two threads that delete