understanding subnetting

A deep understanding of one jvm [memory region] and a deep understanding of the jvm Region Before the beginning of this article, we need to declare that this series of articles discuss the hot spot VM. Most of the ideas in this article are based on Zhou Zhiming, who deeply understands the Java VM: JVM advanced features and best time. if I have any misunderstanding, please correct me. Before you start to ex

Deep understanding of the PHP kernel (i), in-depth understanding of the PHP kernel As a simple and powerful language, PHP provides many of the language features that are available to the Web. From the practice, after the weak type variable principle research, this article continues to lead everybody to understand the PHP kernel deeply. Recently, when I was talking to a netizen, I raised a very strange ques

A deep understanding of Spring's transaction Propagation Behavior and a deep understanding of spring transactions Preface Spring defines seven types of transaction propagation behaviors in the TransactionDefinition interface. Transaction Propagation Behavior is a unique enhancement feature of the Spring framework. It does not belong to the actual provider database behavior of transactions. This is a powerfu

Deep understanding of the PHP kernel (1) and deep understanding of the php kernel. In-depth understanding of the PHP kernel (1), in-depth understanding of the php kernel as a simple and powerful language, PHP can provide a lot of language features applicable to the Web. Starting from practice, I deeply understand the p

In-depth understanding of the OB function buffering mechanism in PHP, PHPOB mechanism in-depth understanding The following is a description of the OB function buffer mechanism in PHP in the form of text and code analysis to show you the following: For a newly-started PHP programmer, the PHP buffer is almost transparent. In their mind, an echo print_r function , the data will be ' swish ' a sound to fly to

In-depth understanding of PHP printf () Output formatted strings, in-depth understanding of printf The PHP printf () function is used to output formatted strings, and this article introduces the use of the PHP printf () function and the basic usage examples of the code farm, which is of interest to the farmer. Definition and usage The printf () function outputs a formatted string. The Arg1, arg2, arg++ par

In-depth understanding of the count function of the PHP array, in-depth understanding of count Count () The PHP count () function calculates the number of cells in an array or the number of properties in an object, returns the number of cells in an array, or the number of properties in an object. Grammar: int count (mixed var [, int mode]) if VAR is a non-array normal variable, returns 1 for non-existent,

by the programmer management Nstread:oc language, object-oriented, easy-to-use, direct manipulation of thread objects, thread lifecycles managed by programmers GCD: (Common) alternative threading technology such as Nstread, take full advantage of device multicore, thread life cycle automatic management, C language Nsoperation: (Common) The bottom is gcd, more than gcd more simple and practical functions, using more object-oriented, automatic management of thread life cycle The

Difference constraint system personal understanding, constraint personal understanding Today, we are exposed to a mysterious thing: Difference Constraint Personal Understanding: The difference constraint is to give some restrictions to find the optimal solution that meets the conditions, or determine whether the conditions are true. Practices/ideas: 1. First, w

EF preliminary understanding, EF understanding EF stands for ADO. NET Entity Framework. It is an object-link solution developed by Microsoft Based on ADO. NET. Here, the object ing relationship is the program design model and database. EF integrates the two, so that the program designer can operate the database without understanding SQL commands. I have a prelim

, after the call Glfinish. (All the commands for the GPU's rendered frame have been drawn, requiring only one glfinish for synchronization). For Swapbuffer's understanding: Swapbuffer commands to the foreground and the background of the "buffer" pointer exchange, that is, the content of the front desk programming background, the background of the content to change to the foreground. But, however, this function does not perform the conver

In-depth understanding of ini configuration in php (2), in-depth understanding of ini. In-depth understanding of ini configuration in php (2), in-depth understanding of ini, continue to the previous article. 1. changing the configuration during runtime I mentioned in the previous article that the ini_set function can d

Understand OAuth2.0 and oauth2.0. Understanding OAuth2.0, understanding oauth2.0OAuth is an open network standard for authorization, which is widely used in the world. The current version is 2.0. This article describes how to understand OAuth2. OAuth 2.0 and oauth2.0 OAuth is an open network standard for authorization. it is widely used all over the world. The current version is version 2.0. This article

Deep understanding of regular expression syntax and deep understanding of Regular Expressions 4. Selection and grouping (1). Group Character group []: Indicates matching one of several characters Character groups can be understood as combinations of characters. The difference between character groups and common characters is: the abc common character indicates matching a and B, followed by c, and the chara

In-depth understanding of PHP principles of execution cycle analysis, in-depth understanding of PHP This article describes the PHP principle of the execution cycle. Share to everyone for your reference, as follows: The execution cycle of PHP, from the first PHP script we wrote to the last script is executed, the results are executed, this process can be divided into the following stages: First of all, Zend

In-depth understanding of the Count function in PHP, in-depth understanding of Phpcount In PHP programming, when iterating over an array, it is often necessary to calculate the length of the array as the judgment condition for the end of the loop, and in PHP the operations of the arrays are very frequent, so count is a common function, and the following is a look at the concrete implementation of the Count

In-depth understanding of the internal structure of the PHP kernel (v) functions, in-depth understanding of internal structures PHP functions include user-defined functions, intrinsic functions (print_r count ...), anonymous functions, variable functions ($func = ' Print_r '; $func (Array (' A ', ' B ');) PHP kernel source will be divided into the following types of functions #define Zend_internal_function

Understanding OAuth 2.0, Understanding oauth2.0 OAuth is an open network standard for licensing (authorization) that is widely used worldwide and is currently available in version 2.0. This paper makes a concise and popular explanation for the design idea and running flow of OAuth 2.0, and the main reference material is RFC 6749. First, the application scenario To understand the application of OAuth, let

In-depth understanding of the streams tools in PHP, in-depth understanding of phpstreams Streams is a powerful tool that PHP provides, and we often inadvertently use it, and if good use will greatly improve PHP productivity. When you harness the power of streams, your application will ascend to a new height. The following is a description of streams in the PHP manual: Streams was introduced in PHP 4.

Code review should be a fundamental system in any important software development effort. Does not refer to the product process alone-it is everything. and code reviews don't take a lot of time and effort, but it can make a huge impact.　　What can I get from the code review?For code review, check with other people's eyes before the code is submitted to prevent bugs from mixing. This is the most common understanding and the most extensive