sexy prone

Why? They all say that they are atomic. What I understand is Atomicity is either full commit or no commit, but I feel that this has nothing to do with concurrency. For example, when the first person uses incr, this time is 1, but it hasn't been

PHP is a great web development language, flexible language, but see the PHP programmers repeating a number of mistakes. I made the following list, listing the 10 errors that PHP programmers often commit, most of which are related to security. Look

PHP is a great web development language and flexible language, but we can see some mistakes made by php programmers. I made the following list to list the 10 errors that PHP programmers often make, most of which are related to security. Look at some

Variable Operators The parent shell script always runs in the sub-shell environment. The sub-shell can only see copies of environment variables, but cannot see local variables of the parent shell; the parent shell can not see local variables of

It should be noted that the table name and field name are wrapped using the operator ("~" on the top left corner of the keyboard). The value behind values is enclosed in single quotes, which is said to be an anti-injection measure. Copy the Code

Which of the following empty functions is php easy to use? In the official php manual, I wrote ,? Check whether a variable is empty. If var is a non-null or non-zero value, empty () returns FALSE. In other words, 0, 0, NULL, FALSE, array (), var $

1. Do not translate html entitiesA basic knowledge: all untrusted input (especially the data submitted by the user from the form) must be converted before output.Echo $ _ GET ['usename'];This example may be output:This is an obvious security risk,

1. Exit MethodI thought that the Exit method would Exit the process immediately after execution, but I changed my mind after I did an example to test it. Please refer to the followingIn this example, the flag is assigned as 'C '. ====================

1. Question about JSP page forms and . Previously, there was a page in the project, because there were a lot of things on the page, so multiple were used,Then, when I submit a form, the script called cannot find the form I submitted.The reason is

Template FunctionsThe declaration and definition of the c ++ template class/template function should be put in the header file. Do not separate the Declaration and definition of the function in the class (for example, in. declare a member function

(1) display the Chinese JSP page: 〉 (2) Use jstl in WebLogic to add in the header: 〉 (3) When the Chinese page submits a response to obtain the parameter value: 〉, You can also use the following method for unified processing. First, create the

Forward references are used before defining classes, interfaces, methods, and variables. For example, class MyClass { void method() { System.out.println(myvar); } String myvar = "var value"; } Myvar is defined after

1] The get, post, and session variables cannot be passed between pages. In the latest PHP version, automatic global variables are disabled, therefore, to obtain the submitted variables from the previous page, use $ _ Get ["foo"], $ _ post ["foo"], $

I made a mistake. Don't you know? Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> View the HTML code: Clientid corresponds to ID and uniqueid corresponds to name. jquery validate uses name

Not for experts, but for people who are easy to forget. :) Haha ~Factory and factory methods:Generally, the factory refers to the factory class or the factory object, and the factory method is a method, that is, a part of the class. The keyword here

As mentioned above, it is easy to leak memory when using spsite objects! The reason for Memory leakage is that the spsite object is not properly closed. Please review the code and correct it in time!In the project, a large amount of exception

Preface: A while ago, I wrote an email check. There is a check option on the Right of @, which cannot contain characters other than letters, numbers, and .-_. So I wrote the following regular expression. * [@] [[\ W] [.-_] * $ Problem: When used in

The working principle of cstring (zz) has read many programs, including some code I have written, A large part of bugs are found in the incorrect usage of cstring In the MFC class. the main cause of this error is that you do not know much about the

  The cause of this problem is probably the encoding of the database.   1. Enter the command line in MySQL: Show variables like 'character _ SET _ % ';   You can see your encoding settings:       2. You can see which one

I. Analysis:Code Char * tostr (INT num) {char s [100]; int I = 0; while (Num> 0) {s [I ++] = num % 10 + '0'; // remember why + '0' num/= 10;} s [I] = '\ 0 '; return s ;} This means to convert the integer into a character array for storage, and