understanding flexbox

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

A deep understanding of the null "type" in java and a deep understanding of null This article focuses on examples of null "type" in java. The details are as follows. First, we will give a simple null-related question, which will lead to our discussion of null. Later, we will explain the "type" of null according to the official language manual. Question: Can the following programs run correctly? Resolution:

Let's talk about impress. js's preliminary understanding and impress. js's understanding 1. Understanding of impress. js Impress. js uses CSS3 and JavaScript to implement a presentation layer framework (Demo tool) for developers ). Currently, common developers can use impress. js to develop demo tools with similar effects, but the performance is better than FLASH

A deep understanding of variable assignment in Python and a deep understanding of python Preface In Python, the variable name rules, like most other advanced languages, are affected by the C language. In addition, the variable name is case sensitive.Python is a dynamic type language. That is to say, you do not need to declare the variable type in advance. The type and value of the variable are initialized a

change. But for the sake of convenience, I only drew a picture to express the changes of these three prototype references. In the heap, the right side is the memory representation of the function object, the middle is the pointer to the prototype property of the function object, and to the left is the object instance created by the function object. The pointer to the prototype property in which the function object is written dog1,dog2,dog3 the three reference changes corresponding to Dog.protot

A deep understanding of the event transfer mechanism of the View, and a deep understanding of the view Introduction: Currently, there are more and more cool Android controls on GitHub. On the one hand, we can make the App look beautiful, and on the other hand, we developers can learn a variety of knowledge from it. Write this blog post to record the knowledge blind spots that are exposed in the process

A deep understanding of javascript function parameters and closures, and a deep understanding of javascript Recently I have been studying javascript Functions. functions are the first-class objects of javascript. To learn javascript well, I must have a deep understanding of functions. I have compiled the learning process into an article. One is to deepen my

IL preliminary understanding, preliminary understanding of English I. Overview: Recently, I have been looking at AOP and learned that Emit can be implemented. Previous knowledge of Emit is part of the commands decompiled by Reflector. I will use this opportunity to learn the learning process of Emit. I also hope you can give me some guidance in some areas I don't know. You can learn about Opcodes before le

A deep understanding of javascript scopes and closures, and a deep understanding of javascript Scope Scope is the scope of a variable and function. All variables declared in the function in javascript are always visible in the function body, and global and local scopes are available in javascript, however, there is no block-level scope, and the priority of local variables is higher than that of global varia

A deep understanding of Spring transaction principles and a deep understanding of spring I. Basic principles of transactionsThe essence of Spring transactions is the database's support for transactions. Without the database's support for transactions, spring cannot provide transaction functions. To use transactions to operate databases only using JDBC, follow these steps:Get Connection con = DriverManager.

A deep understanding of whether function passing parameters in python are value passing or reference passing, and a deep understanding of python At present, most blogs on the internet come to the following conclusions: Python does not allow programmers to choose whether to pass values or pass references. Python parameters must be passed in the "passing object reference" method. In fact, this method is equiv

In-depth understanding of mysql Data Transmission coding principles, in-depth understanding of mysql I. Basic concepts (Here we reference http://www.laruence.com/2008/01/05/12.html) 1. Given a series of characters, assign a value to each character and use a value to represent the corresponding character. This value is the character Encoding (Encoding ). For example, if 'A' is given A value of 0 and 'B' is g

In-depth understanding of the automatic loading mechanism of PHP classes and deep understanding of php Loading Php automatic loading: Before php5, we need to use a class or class method, which must be included or require before it can be used. Every time we use a class, we need to write an include statement, which is troublesome. The php author wants to make it simple. It is best to reference a class. If no