500lines Project Introduction

"500 Rows or less"

"What I cannot create, I does not understand."

--Richard Feynman

"500 lines or less"-Open source Application Architecture Series Fourth edition of the source code.

The goal of the project is to give readers a broader view of what the software designers think.

Project Address: Https://github.com/aosabook/500lines

Each folder in this project is basically a separate project. Try to complete a specific requirement with 500 or less lines of code. Instead of focusing too much on the characteristics of a language or the details of an algorithm, you should try to figure out how software architects decide and weigh when designing software.

Project name	Author	Subordinate institutions	Brief description	Implementing Environments and languages	Number of rows
Blockcode	Dethe Elza	Mozilla	Simple Visual Programming Toolkit	Js,html,css	551
Catechism	Sarah Mei	Sarah Mei	Small Ruby test Framework	Ruby	459
Ci	Malini Das	Mozilla	Simplified distributed Continuous Integration System	Posix,python2.7+,git	627
Cluster	Dustin J. Mitchell	Mozilla	Implementation of a simple replication state machine based on the Paxos algorithm	Python	1254
Crawler	Guido van Rossum	Dropbox	Crawler	Python 3.4, or 3.3 + Asyncio	731
Data-store	Taavi Burns	Points.com	(dogbed DataBase) class BDB or SQLite key-value pair storage	Python	778
Flow-shop	Christian Muise	University of Melbourne	Basic realization of flow-shop scheduling problem	Python	423
Functionaldb	Yoav Rubin	Microsoft	Memory-based NoSQL functional database	Clojure	576
Graph-layout	Julia Evans		Chart style engine, not yet done
Image-filters	Cate Huston		Image filter	java1.6+	846
Modeller	Erick Dransch	Upverter	Minimal 3D modeling Tool	Python 2.7,unix	1083
Objmodel	Carl Friedrich Bolz		A simple object-oriented object model implementation	Python 2.7 or 3.3	2292
Ocr	Marina Samuel	Mozilla	Image recognition	Python,html,js	394
Pedometer	Dessy Daskalov	Nudge Rewards	Pedometer	Ruby	1417
Rasterizer			Convert any shape to a raster (that is, a rectangular pixel table)	Python	685
Sampler	Jessica B. Hamrick	UC Berkeley	Sampling method	Python	307
Spreadsheet	Audrey Tang	g0v.tw, Socialtext, Apple	Online e-form	JS (ES6), Html5,css3,angularjs	1265
Typecheck	Leah Hanson	Google	Types of Julia language static analysis	Julia	590
Template-engine	Ned Batchelder	EdX	Simple template engine	Python	574
Torrent_client	Kresten Krab Thorup	Trifork	A simple torrent client	Erlang	1731
Web-server	Greg Wilson	Mozilla	A simple Web server	Python	954

Note: Row count statistics are only used as a reference, and the actual situation will differ

500lines Project Introduction