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i'm working on a project - an office information management system,
the database is a MySQL database, and now i have to build the front end GUI.
already I drawed a model of a screen example with PP (from total of 15 in my system),
my question is how to build the GUI? which tool/language is simple and easy to learn?
i thought about C++ but i no experience with it...
the information have to be retrived from the DB, read, write, queries, and so on.
will be happy to read your thoughts
![Powerpoint initial model][1]
The implementation that should come to your mind is one in a programming language you know. You can program this in many languages:
Visual Basic. If you already know it, this can be the fastest. Start the IDE and put together a forms project for you DB app.
Java. Many people know Java and you can pick it up in a matter of days and you're likely to have use for it in several projects. A Swing or AWT project that you build in Eclipse or Netbeans with the DB driver for the DB connection will work.
Python is also a popular choice. You can use the library tkinter to make quick GUIs.
C/C++ will also work. But if you don't know C/C++ already you might want to build GUIs with higher abstraction.
A web application with CSS/JScript using some Javascript framework to do DB i/o. But from your question it definitely seems that you want a desktop app.
Use this project to learn a new language. You might not know Lua, Haskell, Clojure, Scala, Kotlin, Fantom, Erlang or some other tool that you don't know how to connect to MySQL with, then it'll be good practice to do so in a new language.
Any of the above will work and if I faced this project I would use tool of the above.
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Please read before you answer: I don't need any opinion-based answers or "nosql vs sql which is better" debates on the subject, just facts.
I want to slowly convert a php+mysql website I wrote with Symfony2 into a real time application using backbone with nodeJs + websockets.
I want to make a slow transition by changing single features, since I don't want to break a fully functional site.
I have been educating myself about NodeJs by reading books and watching Tutorials and there is one thing I noticed, I own more than 5 nodeJs books and none of them use MySql although its fully supported by node.
They all use MongoDB.
Here is my situation
1. My Website is already integrated into MySql(Doctrine)
2. My MySQL setup is fully functional and needs no improvements so far
I'm really frustated and I have a few questions:
Why is MySql not prefered although its a more mature piece of technology?
What are the advantages of moving to MongoDB over MySQL for the purpose of having a real-time application??
I've seen people choose Node/Mongo development because of the simplicity of the all-JavaScript stack, I've seen people choose Mongo because it's the New Hotness, and I've seen people choose Mongo because it's actually the right tool for the job: they have a large amount of document-like, unstructured data and/or they want to take advantage of Mongo's support for horizontal scaling, among other differences between MySQL and Mongo.
I'm not sure it's possible to answer this question in a non-opinion-based manner and without touching on Sql vs NoSql. Mongo is simply a tool, and it happens to be free and commonly used in the field with Node. If I were writing a Node tutorial, I'd probably choose Mongo too, because it's common and it's cool.
If Mongo is the right tool for your site's use cases, then the transition is probably worth it. If MySQL is the right tool for your site, then congratulations! You've just saved a bunch of time rewriting your DB in Mongo.
As an aside- if your question uses the word "preferred", I can't really think of a way for it to not be opinion-based, by definition.
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I am a C++ developer. I want to develop a website in which I plan to put
User accounts
User groups
Alerts based on user preferences
Can anybody suggest the best open source framework that I can use to create this website. I hope that the framework would provide basic underlying infrastructer like session management etc. In short what would you suggest to create such a website?
Thanks in advance.
I'm a mainly a PHP web developper, so I will talk about php framework.
I like expressionengine as it provide a fully functional backend with user/group management and is easily extendable (a lot of plugins exists). With it you juste have to program the public interface and you can use the backend to manage stuff.
If you want to do it your own way, you can try Symfony, code igniter (expression engine is build using code igniter) or Zend Framework. Both provide similar tools (MVC, DB Abstraction, etc.)
i'm mainly a java developer, so i'll recommend you a .. Python framework ;)
for your use case, i can highly recommend Django
it has a built-in auth system which consists of:
Users
Permissions
Groups
also important for your use case: you can easily extend the built-in User model to also include the user's preferences.
it's also very easy to get started.
some other nice features:
dynamic admin interface (~ scaffolding)
flexible templating system
rapid development
it comes with an object-relational mapper in which you describe your database layout in Python code (no need to write SQL yourself)
MVC-like
open source of course
I'm fond of Catalyst, it has an excellent plugin system which includes things like Catalyst::ActionRole::ACL (which should cover your user groups requirement)
Though the framework is not actually open source, I would suggest working with the .Net framework. You don't have to shell out for Microsoft's IDE - check out Sharp Develop for instance...
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I am a software development guy. Lately I was thinking of trying out some firmware development, as the company I work for is trying to enter that domain.
I have many questions regarding firmware devlopment - like:
What are the tools used - like IDE?
In which language is most of the code written in?
How to port the code into microcontroller?
How to code for different microcontrollers?
How to determine things I would need for building a specific application(choosing the microcontroller etc.)?
Anything else I should know about and where do I start? Sorry if this question is too basic, but I could not find out any satisfactory answers elsewhere.
Most microcontrollers have decent C compilers so are best coded for in C, although you might need to delve into assembly routines for occassional high performance routines. The choice of microcontroller is usually determined by the hardware demands, on board peripherals, performance and cost constraints.
You wouldn't generally be porting code from a Windows/Linux/Mac environment to a microcontroller one; you would generally be writing directly for the microcontroller, so strictly the compiler is a cross compiler - compiling on your PC to run on a different processor. You typically get debuggers, emulators and full editor capabilities in the IDE, so its a similar experience to writing code in a PC environment, but it runs slower, and has to be downloaded to the target hardware or emulated to be tested.
A great authority to start reading about embedded development is Jack Gansle and his firmware handbook. Also www.embedded.com for general articles.
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The crawler needs to have an extendable architecture to allow changing the internal process, like implementing new steps (pre-parser, parser, etc...)
I found the Heritrix Project (http://crawler.archive.org/).
But there are other nice projects like that?
Nutch is the best you can do when it comes to a free crawler. It is built off of the concept of Lucene (in an enterprise scaled manner) and is supported by the Hadoop back end using MapReduce (similar to Google) for large scale data querying. Great products! I am currently reading all about Hadoop in the new (not yet released) Hadoop in Action from manning. If you go this route I suggest getting onto their technical review team to get an early copy of this title!
These are all Java based. If you are a .net guy (like me!!) then you might be more interested in Lucene.NET, Nutch.NET, and Hadoop.NET which are all class by class and api by api ports to C#.
You May also want to try Scrapy http://scrapy.org/
It is really easy to specify and run your crawlers.
Abot is a good extensible web-crawler. Every part of the architecture is pluggable giving you complete control over its behavior. Its open source, free for commercial and personal use, written in C#.
https://github.com/sjdirect/abot
I've discovered recently one called - Nutch.
If you're not tied down to platform, I've had very good experiences with Nutch in the past.
It's written in Java and goes hand in hand with the Lucene indexer.
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I need some resources for implementing a simple virtual machine and interpreted language. Something that is pratical is most useful. I have read the Virtual Machine Implementation book and found that it is quite old and doesn't represent the vms I see today. Also if someone know of a fairly simplistic language that would be great as well.
check The implementation of Lua 5.0
You don't say if this is for a new project, to work with an existing project, for learning, or what target environment, language, and OS you're using.
If you want to learn about implementing your own VM and scripting language, get the book Game Scripting Mastery. Despite its title, it is actually about implementing your own virtual machine and scripting language. The source code is for Win32, but the concepts can be applied to .Net or Linux.
As a bonus, when you're done you will have a playable, scriptable, 2D adventure game.