lisp programming tutorial

imeasure type, and call the method in which to calculate the area and perimeter of the triangle with an edge length of 10.6.5>: In addition to the design of a new class, while inheriting the following interface Iameasure and the 2nd above the imeasure, in addition to providing a specific length of the equilateral triangle side length and the area of the calculation method, but also realized the iameasure of areas () members, Provides a method for calculating the square area.Interface Iameasure{

the exit string, the connection is closed directly.To test this server program, we also need to write a client program:Note that the client program runs out, and the server program will run forever, you must press CTRL + C to exit the program.SummarySocket programming with the TCP protocol is very simple in Python, for the client, to actively connect to the server's IP and the specified port, for the server, to first listen to the specified port, and

Original place: TWISTED-INTRO-CN Dave Translator: Yang Xiaowei Luocheng LikebetaReprint statement: The copyright belongs to the original made all, reproduced only to let more people see this excellent works collection, if infringement, please leave a message to informThanks: thank Yang Xiaowei Luocheng Likebeta for the milestone contribution to the domestic twisted coderOther: Access to GitHub's children's shoes, please visit the source link. Because the source layout is very good! 1.Twisted t

Introduction Functional programming (functional programming) concept originated in Lisp, founded by John McCarthy in 1958, the idea of automatic garbage collection was first proposed, and this concept is now being used for reference by Python/java/ruby and other languages. To this day, Lisp has derived a variety of di

Simple Socket programming tutorial in Ruby, rubysocket Programming Ruby provides two levels of network access services. At the underlying layer, you can access the Operating System. This allows you to implement basic socket support for connection-oriented and non-connection protocols for clients and servers. Ruby supports the network protocols of application prog

SQLite tutorial (13): C language programming example code (1), sqlite programming example 1. Get the table Schema information: 1) dynamically create a table. 2) obtain the table field information, such as the number of fields and the type of each field, based on the API provided by sqlite3. 3). Delete the table. See the following code and key notes:Copy codeThe C

JSP Programming Development tutorial _ data exchange and jsp Programming Development JSP Programming Development tutorial _ data exchange. JSP uses the Java scripting language embedded in HTML to affect dynamic page requests. Forwarding plays a role on the server. It refe

Linux Serial Programming Tutorial (iii)--serial port programming detailed Preface: This chapter will formally explain the serial port programming technology, uses a serial port to send and receive the data the procedure, comes step-by-step explanation. Note: You can download my source code for reference. Open serial P

PHP programming daily must-learn form validation, PHP programming form This article explains the implementation of PHP form verification, share to everyone for reference, the specific content as follows 1.PHP form ProcessingWelcome.html welcome.php Welcome Your Email address is: 2.PHP Form Validation Complete instance PHP Validation Example* Required Fields Your input:"Echo $name; echo""Echo $ema

This article mainly introduces the concepts related to JavaScript object-oriented programming, such as classes, objects, attributes, methods, and other object-oriented terms, and explains the use of various terms with examples, this is a very good object-oriented getting started tutorial. You can refer to other languages. Although object-oriented JavaScript is different from other languages, this leads to s

SQLite tutorial (14): C language programming example code (2), sqlite programming example 3. Efficient batch data insertion: Before giving the operation steps, let's briefly describe the concept of batch insert to help you read the subsequent sample code. In fact, batch insert is not a new concept. It is supported in the C interface APIs of other relational datab

Nginx Programming Development tutorial-PHP compilation and installation method, nginx Programming DevelopmentGet PHP: ???? Http://php.net /????Compile and install PHP: ???? Yum-y install libxml2-devel? ? # Install the dependency package first ???? Yum-y install curl-devel ???? Yum-y install libjpeg-devel ???? Yum-y install libpng-devel ???? Yum-y install freetype

extension is. Sol. And Python close to the serpent, with the file name ending with. SE. There are also lll like Lisp. Serpent has been popular for some time, but now the most popular and most stable to be considered solidity, so with solidity good. I heard you like python? With solidity. Solc compiler. After writing a smart contract with solidity, you need to compile it with SOLC. It is a component from the C + + client implementation (again, differe

Headlines Forum Video Ðapps Knowledge Base official wallet image URL navigation Spark node plan spark Pool login Registration A beginner's tutorial on Ethereum smart Contract programming Jan | 2015, Nov | 30,578 Reads The original is the Consensys developer blog, the original author of Eva and Consensys development team. If you want to get more timely information, you can visit the Consensys home page and

Ten tips to improve your PHP programming skills. PHP has grown rapidly since its birth in 1995. Since then, php has become the most popular programming language in web applications. Many popular websites are driven by php, and most scripts and network processes have grown rapidly since the birth of PHP in 1995. Since then, php has become the most popular programming