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The previous few basic has achieved most of the instant Messaging features: Chat, group chat, send files, pictures, messages. But these businesses are relatively rugged. Below we have the business refinement, before using the dead data, then we will

Segment mechanism for easy experienceMemory Addressing:memory addressing in real mode:Let's start by reviewing the addressing in real modeSegment Header Address x16+ offset = Physical AddressWhy should x16. Because in 8086CPU, the address line is 20

Comprehensive Analysis of pmtest1.asm-[orange's] in "writing an operating system by yourself" I recently learned how to write the OS. I have seen a strong post on the Internet. I don't know how to write this code.Segment mechanism for easy

Segment mechanism for easy experienceMemory addressing:Memory addressing in real mode:Let's first review the addressing methods in the real mode.Segment header address × 16 + offset = physical addressIsWhat is x 16? In the 8086cpu, the address line

When developing Web applications, you often have to add search capabilities. I didn't even know what to search, so I drew a magnifying glass on the sketch. Search is a very important feature, so lucene based tools like Elasticsearch and SOLR become

# # 1. Search algorithm overall architecture in the previous article (engineering article), we introduced the basic framework of the likes search engine. Search engine mainly consists of 3 components. First, the Hadoop cluster, used to generate

PHP Regular Expression full manual preface the regular expression is cumbersome, but powerful, learned after the application will let you in addition to improve efficiency, will give you an absolute sense of accomplishment. It is not a problem to

Original: Full Manual of PHP regular expressionsPHP Regular Expression full manual preface the regular expression is cumbersome, but powerful, learned after the application will let you in addition to improve efficiency, will give you an absolute

ArticleDirectory Display text of a specific font and size on the screen Display text in the center of the screen Familiar with xcode 4 Create a new project Select a new project template Basic Project Options Select storage

How do I traverse an array of elements? 20 years ago, when JavaScript appeared, you might do this: for (var index = 0; index Since ES5 started, you can use the built-in ForEach method: JavaScript Myarray.foreach (function