understanding netflow

JQuery understanding (2) functional functions; jquery understanding functional functions In javascript programming, developers usually need to write many small programs to implement some specific functions. For example, browser detection, string processing, and array editing. JQuery summarizes these commonly used programs and provides many practical functions. 1. Check the browser. JQuery obtains browser in

Deep understanding of polymorphism ., Deep understanding of Polymorphism 1. Inheritance: if Class A can obtain public information from Class B, this mechanism is called inheritance.2. About the base keywordBase. parent class attributesBase. Parent Class MethodBase ()3. protected is protected. It can be accessed in the current class and subclass. (Locked/restricted objects: variables in the class)4. Secret o

Deep understanding of CSS background and deep understanding of css* Directory [1] background color [2] background image [3] background tile [4] background positioning [5] background Association [6] background origin [7] background cropping [8] background size [9] In front of compound background The background is a composite attribute like the font, and it is a frequently used attribute. In CSS3, the backgro

Deep understanding of CSS pseudo classes and deep understanding of css pseudo* Directory [1] ANCHOR [2] UI element [3] structure pseudo class [4] Other prefix Pseudo classes are often confused with pseudo elements. The effect of pseudo elements is similar to that of adding an actual element. The effect of pseudo elements is similar to that of adding an actual class. In fact, to distinguish the two, css3 has

Deep understanding of absolute CSS positioning, deep understanding of CSS positioning* Directory [1] define [2] features [3] display [4] clip [5] in front of overflow We have already introduced the positioning offset and stack. In this example, a large number of applications have applied absolute positioning. Compared with relative positioning and fixed positioning, absolute positioning has a higher applica

seen called the Native Stringfromjni () method, using the keyword native to inform the Java compiler, this is implemented in another language, and then by the addition of shared library (Static statement block) Hello-jni to tell the virtual machine native method of the specific implementation. The Java.lang.System class provides two static methods that load and LoadLibrary use to load a shared library at run time. Let's take a look at the specific implementation.#include The first parameter, JN

WebAPI preliminary understanding (CURD), webapi understanding curd 1. Create an MVC project and select API 2. Add the Product class, IProductRepository interface, and ProductRepository class to the Models layer. Public class Product{Public int ID {get; set ;}Public string Name {get; set ;}Public string Category {get; set ;}Public decimal Price {get; set ;}} Public interface IProductRepository{IEnumerable Pr

First understanding of ajax technology, first understanding of ajax First, let me introduce why I need ajax technology. 1. There is a text input box on the page. When I click Submit, I can pass the value in the text box to the background. 2. parameters received in the background 3. Connect to the database and add the passed content to the database. 4. Call the method to pass the returned value to the foregr

Basic understanding of Jquery series (1) and understanding of jquery Series The Demo used for testing Jquery in this series is "uncompressed, development jQuery 1.11.3". The latest jquery package can be downloaded from the official website please refer to http://jquery.com/ Jquery has two versions on the official website: Uncompressed non-compressed version It is generally used for debugging and developm

constantly. However, for convenience, I drew only one figure to express the changes of the three prototype references. In the heap, the right side is the memory representation of the function object, the center is the pointing of the prototype attribute of the function object, and the left side is the object instance created by the function object. The function object points to the pointer of the prototype attribute and writes dog1, dog2, and dog3 correspond to three reference changes of Dog. p

Deep understanding of CSS Media queries and deep understanding of css* Contents [1] media type [2] media attributes [3] syntax When it comes to responsive design, media queries are indispensable. It is generally considered that media queries are newly added to CSS3. In fact, CSS2 already exists, and CSS3 adds media attributes and use cases (not supported by IE8-browser ). This topic describes the content of

A deep understanding of the block concept in Ruby and a deep understanding of rubyblock Block in Ruby is generally translated into code blocks, which seem a bit strange at the beginning, because there is no such thing in many languages. In fact, it is not bad.First-class function and Higher-order function The First-class function and Higher-order function are concepts in functional programming languages. Th

Understanding of the assembly and understanding of the Assembly CLR interprets an assembly as a collection of one or more types of definition files and resource files. Generally, files suffixed with dll or exe are actually an assembly. Add resource files to an assembly. For example, if you commonly Add a Special icon to a Winform desktop program, you can select project "properties" in Visual Studio ", then

First understanding of PHP (1) Basic syntax, first understanding of php basic syntax. I first got to know the basic syntax of PHP (I). I first got to know the basic syntax of php and was always ready to learn PHP. as a result, there was always a problem some time ago, which was delayed for a while. Catch up now! This series only talks about basic PHP (1) and basic php syntax. I have been preparing to learn

KVO-understanding and simple use, KVO-understanding and simple useKVO is the key value observing (key value listening/Observer mode)/is a callback mechanism observer mode: A target object manages all the observer objects dependent on IT/and actively notifies the observer object when its own status changes/this brake notification is usually done by calling the interface methods provided by each observer obje

Javascript: a deep understanding of basic Javascript knowledge and a deep understanding of javascriptThe eval global function is shown in the loader of dojo as the next function. Var eval _ = new Function ('Return eval (arguments [0]); '); // The Function runs in the top-level scope, but the running efficiency is slower, however, this method does not pollute global variables and calls the top-level scope ev

Deep understanding of java Nested classes and internal classes, and deep understanding of java Nested classes 1. What are nested classes and internal classes? You can define another class within a class. This class is called the nested classes. It has two types: static nested class and non-static nested class. Static Nested classes are rarely used. The most important is non-static Nested classes, that is, t

Personal Understanding of epollhup and personal understanding of epollhup 1. Cause Due to the recent test of the asynchronous connect function, it is found that the epollhup event will continuously occur when a socket is added to the epoll listening queue in advance. 2. Example ........ IEpoll = epoll_create (1 ); IFd = socket (AF_INET, SOCK_STREAM, 0 ); StEvent. events = EPOLL_IN; StEvent. data. u3

Understanding and practice of GCD, and GCD understanding and practiceGCD GCD, full Grand Central Dispatch, is a solution developed by Apple for multi-core parallel processing. It is implemented in C language, but it is very convenient to use because block is used to process callback. In addition, GCD automatically manages the thread lifecycle, which does not need to be managed.Tasks and queues GCD has two i

Operating System: management process understanding, operating system management process understanding I recently started to read the operating system book (which is not in this direction). I still cannot fully understand it when I read the book, so let's simply summarize it. 1.A process (Monitors, also known as a monitor) is a program structure. Multiple working threads in the structure form multiple subpro