abstract syntax

-------------------------------------------Split Line------------------------------------------- Database in-depth learning note-sql execution engine Here are a few questions to start today's discussion: 1, what is the SQL engine. 2, what is SQL

first, WebKit kernel and V8In Chrome, use WebKit for HTML rendering, using V8 as the JS engine. Chrome and WebKit are open source, but Chrome keeps webkit distance, and chrome encapsulates a layer called WebKit Glue on WebKit. In the glue layer,

1. Compiler 1.1. Compile period classificationA *.java file is generally compiled and run, and involves two types of compilation periods:① Compile-time compilation: The process that generally represents *.java->*.class (contains bytecode)-also

This note is my understanding of the content of the 2.3-2.5 section of Dragon book, which mainly introduces the many basic concepts of the compiler front-end about parsing. The next note will be based on the main content of this note , the

Transferred from: http://mp.weixin.qq.com/s?__biz=MzA3ODg4MDk0Ng==&mid=2651112856&idx=1&sn= b2c74c62a10b4c9a4e7538d1ad7eb739The weight of the iOS package is not the primary goal of optimization for the general team, but it is critical for some teams

Frontend capability model-V8 JS engine and frontend-v8js EngineI. webkit kernel and V8In chrome, webkit is used for html Rendering and v8 is used as the js engine. Although Chrome and Webkit are both open-source, Chrome is always at a distance from

[Longshu Note] introduction to basic concepts involved in syntax analysis This document is my understanding of sections 2.3-2.5 of longshu. It mainly introduces many basic concepts of syntax analysis on the compiler front-end. The next note will be

Reprint please indicate the source: Http://blog.csdn.net/horkychen The V8 JavaScript engine developed by Google has excellent performance. We ask the author who is familiar with the internal program implementation Yi Yuan code to see how the V8

PHP7 to the depth of Zend optimization, so that PHP7 speed greatly increased, nearly 5 times times faster than php5.0~5.6, but also reduce the use of PHP system resourcesThe following is a few changes PHP7 than the larger:1, abstract syntax tree:

Are you planning to optimize the Hashcode () method? Do you want to bypass the regular expression? Lukas Eder introduces a number of simple and convenient performance optimization tips as well as extension program performance techniques.Recently,

This article gives you the content is about the new features in the PHP7 summary, there is a certain reference value, the need for a friend can refer to, I hope you have some help. PHP7 has been published to now for nearly three years, and has now

According to the design pattern, although the C # code is not systematically trained, although it can be understood in general, there are still some concepts and technical aspects that are not clear. Now that we have encountered this problem, we

1 Intent: Given a language, define a representation of its grammar, and define an interpreter that uses that representation to interpret sentences in the language.2 motivation: If a particular type of problem occurs at a sufficiently high frequency,

Lexical analysisLexical analysis converts the character stream of the source code into a set of tokens (tokens), which is the smallest element of the programming process, while the tag is the smallest element of the compilation process, and the

10 simple Java performance optimizations and java performance optimizations Recently, the word "full domain (Web Scale)" has become popular, and people are also scaling their application architecture to make their systems more "full domain ". But

Four Javac compilation processes ?? The Javac compilation process is roughly divided into four processes:Lexical Analysis syntax analysis semantic analysis code generation lexical analysis ?? Lexical analysis is to transform the Token stream of the

Code Process The sexp_eval_string function shows the entire code process. Sexp_eval_string = sexp_read_from_string + sexp_eval The former has completed syntax analysis, and the latter has compiled and executed Sexp_eval = sexp_compile +

The 23 gof design modes are generally divided into three categories: Creation Mode, structure mode, and behavior mode. The Creation Mode abstracts the instantiation process, which helps a system to create, combine, and express its objects

The 23 gof design modes are generally divided into three categories: Creation Mode, structure mode, and behavior mode. The Creation Mode abstracts the instantiation process, which helps a system to create, combine, and express its objects

The Java compiler is generally divided into the front-end compiler, the JIT (just in time compiler) compiler, the AOT (Ahead of Time compiler) compiler three. Front-end compilers: compilers that compile Java files into class files,