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Use Java to implement specific internal domain languages

Http://bbs.dev.ccidnet.com/read.php? Tid = 586331 Introduction A domain-specific language (DSL) is usually defined as a computer language that specifically targets certain special problems. It is not intended to solve non-domain problems. The formal research on DSL has been going on for many years until recently, when programmers try to solve their problems in the most readable and concise way, internal

Air read and write files

FileReference: Package com {import flash. display. bitmap; import flash. display. loader; import flash. display. sprite; import flash. events. event; import flash. events. IOErrorEvent; import flash. events. progressEvent; import flash.net. fileFilter; import flash.net. fileReference; import flash.net. URLLoader; import flash. utils. byteArray; import mx. messaging. channels. streamingAMFChannel; public class FileFiag extends Sprite {private var fileR

Reading Bitmap (bitmap) Implementation and its key points

*) ; Bitmapfileheader Bitmapfileheader; Bitmapinfohead Bitmapinfohead; Rgbquad*Rgbquad; PIXEL*Pixeldata; };Specific CPP files:BOOLBw_bitmap::readbmp (Char*fileName) {FILE*FileR, Filew; FileR= fopen (FileName,"RB") ; if(FileR! =NULL) { //bw_bitmap* BITMAP = new Bw_bitmap;Fread (bitmapfileheader,1,sizeof(Bitmapfileheader),

[Reprint] Shielded dual graphics card notebook's unique display

place them where they are modified. For these, please go to this post to learn: [authorized translation] using patch modification DSDT/SSDT [DSDT/SSDT Comprehensive tutorial] you need to be familiar with this before you actually do it.You can also look at the landlord's video tutorial (because the video tutorial recorded earlier, so the operation and this paste slightly different. The video as a demonstration of how to modify the ACPI file as shown in this post): [Video tutorial]acpi file proce

Django implements the upload image feature

Many times we need to use the image upload function, if the picture has been put on other sites, by loading the way to display the URL is actually quite troublesome, we use django-filer this module to achieve the image file directly on their own website.Interested students can look at the official introduction: Https://github.com/divio/django-filer1. Install with PIP.Install Django-filerThis module requires DJANGO-MPTT, Easy_thumbnails, django-polymor

Martinfowler's "language workbench" Notes

When the MPs of jetbrains came out, Martin Fowler also made a great effort to write the article "language workbenches: The killer-app for domain specific ages?". Become a general article interested in the lop and DSL fields. First, it is important to understand Martin Fowler's position. However, in order to ensure the reading rate, MF puts its position at the end. 1. The two biggest advantages brought by LOP are:A. Improve the productivity of programm

Java Annotation Processor-Five minute QuickStart __java

standardized and incorporated into the standard library through JSR 269, and the APT tool has been seamlessly integrated into the Java compiler tool JAVAC. Java 6 provides an abstract class javax.annotation.processing.AbstractProcessor that has implemented common functionality, and also provides Javax.lang.model packages. Annotation Processor API If we want to develop a note processor ourselves, we need to inherit from Abstractprocessor, as follows: package com.bytebeats.apt; public class Examp

20th Chapter-Development Delphi Object Type Data management function (II.) (5)

suite. Realization principle and application of 20.2 read-write Object Read-Write objects (Filer) include Tfiler objects, Treader objects, and Twriter objects. The Tfiler object is the underlying object of file reading and writing, and is used primarily in Treader and twriter applications. Both Treader and Twriter objects are inherited directly from the Tfiler object. The Tfiler object defines the basic properties and methods of the

Using architecture as a language: a story

implements it, the technical discussion only refers to the conceptual description provided here to provide implementation details (of course very important implementation details ). We understand the meaning of different terms and give a clear definition. The vague concept of components has a formal and clearly defined meaning in this system. Of course, it does not end here. Next we will discuss how to encode the component implementation and discuss which part of the system can be automatically

Php getting File extension _ PHP Tutorial

Php gets the file extension. Php obtains the file extension functionGetFiletype ($ filename) {$ filerexplode (., $ filename); $ countcount ($ filer)-1; returnstrtolower (.. $ filer [$ count]);} php gets the file extension Function GetFiletype ($ filename ){$ Filer = explode (".", $ filename );$ Count = count ($ filer

What problems does MetaProgramming mainly solve?

" is actually like this. The definition of metaprogramming is to write the code. quote in lisp can block the evaluation and use eval when necessary. Then, when running, operating your own code also has another meaning. It can be called dynamic metaprogramming to distinguish between the code generator and the compiler-Based Static metaprogramming. Generate various codes (classes, methods, tests, and so on) in batches to reduce repeated operations during programming. Various

Evolutionary architecture and emergent design

In previous installments, I have begun to introduce the harvesting of domain idiomatic patterns (solutions for urgent business problems) by using domain-specific languages. For this task, DSL work is good because they are concise (with as few noisy syntax as possible) and readable (even by developers), and they stand out from more API-centric code. In the previous issue, I had shown how to use Groovy to build a DS

Using Java to implement modular parser __java

http://www.ibm.com/developerworks/cn/java/j-lo-compose/index.htmlimplementing modular parser with Java Sun Yu, DengIntroduction: Ward Cunningham once said that clean code clearly expresses what the code writer wants to express, while graceful code goes further, and beautiful code looks like it's a problem to be solved. In this article, we will show the design and implementation of a modular parser, the final code is graceful and extensible, as if it were to parse a particular syntax. We will als

20th Chapter-Development Delphi Object Type Data management function (III.) (1)

Properties and methods of 20.2.1.1 Tfiler objects 1. Root Property Statement: Property root:tcomponent; The root property indicates to the Filer object which object in the read-write object is the root or primary owner. The Rootcomponent and Writerootcomponent methods set the value of root before reading and writing parts and their own parts. 2. Ancestor Properties Statement: Property ancestor:tpersistent; The Ancestor property is used to write

VC reads UTF-8 text files

Read the UTF-8 format text file remove the three bytes of the file header, first read the text data to the char array, then convert the multi-byte utf8 string into a wide character Unicode string, then convert the Unicode string to a char string or directly copy it to the cstring (both UTF-8 and char belong to multibyte char and cannot be directly converted to each other) bool readutf8stringfile (cstring path, cstring Str) {cfile filer; If (!

Domain-specific language

Original Title: domain-specific ages original Publishing House: Addison-Wesley professional; 1 edition Author: (English) Martin Fowler Translator: thoughtworks China Book Series Name: china CHAPTER programmer library Publishing House: Machinery Industry Publishing House ISBN: 9787111413059 mounting Date: March 2013 publication date: 16 open pages: 464 versions: 1-1 category: computer> Software and programming> integration> advanced programming language design For more information, see Introducti

Policy-based multi-path Wan

Policy-based multi-path Wan The construction of a multi-path Wan can reduce business continuity risks, while avoiding the high cost of building a dedicated-Line Wan and a dedicated-Line Wan. Therefore, enterprises can make full use of cheap and abundant DSL Internet links while effectively utilizing existing WAN resources. The enterprise's reliance on Wan is reaching a record level. Remote access to key business applications grows steadily as enterpri

Parser Composition Sub

very clear and clear in some problem areas may become less clear when implemented. As programmers, using clean code to achieve functionality is only a primary requirement, more importantly, to improve the level of common language, to build a specific problem domain language (DSL), the process is a key point is to find and define the problem domain-oriented atomic concepts, Combination of methods and abstract means . The

[Goa]golang Micro-Service Framework Learning (ii)--code auto-generation

. Service) *Operandscontroller {returnoperandscontroller{controller:service. Newcontroller ("Operandscontroller")}}//Add runs the Add action.Func (c *operandscontroller) Add (CTX *app. Addoperandscontext) Error {//Tbd:implement write the corresponding function logic here returnNil}Very good, no need to repeat the framework of the Low-level code (routing, codec, etc.).Although the former company's framework was used before (that is, the use of Java's reflection to generate code automatically),

Tutorial on using Ruby to implement simple things-driven Web applications _ruby topics

the following business operations:Table 1. Business operations Domain-specific language (domain specific Language) The so-called domain-specific language (domain specific LANGUAGE/DSL), its basic idea is "to ask for a special purpose", unlike the general-purpose language as the target scope covers all software problems, but specifically for a specific problem computer language. As its name claims, the language is not generic, but focused on a par

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