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  • Lua and multi-paradigm programming: scope and capabilities

    - by Ef Es
    Despite having started learning programming with Pascal and C, after the jump to OO (C++, Java) I lost sense of the structured programming paradigm. I have started learning Lua and I have researched many tutorials, but all of them only cover basic operations and language features and capabilities. They feel more like a reference doc than a programmer's guide. Now, when trying to work with day to day tasks, how does one go through most common design patterns like observer, or multithreaded programming, creating UI elements and polling system calls for keyboard or sensors? Is it even feasible in this languages or you have to work with the C binding, libraries and low-level programming to get most stuff done? Do I get the Lua scope wrong?

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  • What Are Some Tips For Writing A Large Number of Unit Tests?

    - by joshin4colours
    I've recently been tasked with testing some COM objects of the desktop app I work on. What this means in practice is writing a large number (100) unit tests to test different but related methods and objects. While the unit tests themselves are fairly straight forward (usually one or two Assert()-type checks per test), I'm struggling to figure out the best way to write these tests in a coherent, organized manner. What I have found is that copy and Paste coding should be avoided. It creates more problems than it's worth, and it's even worse than copy-and-paste code in production code because test code has to be more frequently updated and modified. I'm leaning toward trying an OO-approach using but again, the sheer number makes even this approach daunting from an organizational standpoint due to concern with maintenance. It also doesn't help that the tests are currently written in C++, which adds some complexity with memory management issues. Any thoughts or suggestions?

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  • How to switch language spellingcheck on the fly when changing keyboard with alt-shift?

    - by Kosmas Papagiannis
    i just recently installed ubuntu 11.04, english version that comes with libreoffice. I also installed Greek language. Is there some way to make Writer recognize my input language (English - Greek) and apply spelling check on the fly, according to my input language? For example, i type a sentence in English, then switch keyboard input (Alt-Shift) and type a sentence in Greek. Writer does no recognize the Greek sentence and underlines it red. MS Office and OO under Windows does it... As soon as you change input language (keyboard layout), the real time spelling checker changes also between languages... Thank you in advance...

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  • Fast language for problem solving? [closed]

    - by Friend of Kim
    I learned PHP to make websites. After some years I've started using programming for solving what is difficult tasks for my level. Now I want to make a program that solves equations. (I want to write it myself, not use an API. Because I'm doing this for the sake of the challenge, not for the result..) Because of this, I'm going to learn a new and faster/better language. It's going to be C++, Java, Python or C#. What are the benefits of each language, and which language is best for speed compared to speed of writing and readability? Using C would be lightning fast, but the lack of OO is making for more complex code and reduces the readability, for example..

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  • Criteria for a language to be considered "object oriented"

    - by nist
    I had a discussion about OO programming today and by browsing the internet I found a lot of different specifications for object oriented languages. What are the requirements for a language to be object oriented? For myself an object oriented language must have classes, inheritance and encapsulation. Is C an object oriented language just because you can use structs and program with an object oriented design? Why/ why not? Are there any good sites/articles about this? And please, no Wikipedia links because I've already been there.

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  • Advice on approaching a significant rearrangement/refactoring?

    - by Prog
    I'm working on an application (hobby project, solo programmer, small-medium size), and I have recently redesigned a significant part of it. The program already works in it's current state, but I decided to reimplement things to improve the OO design. I'm about to implement this new design by refactoring a big part of the application. Thing is I'm not sure where to start. Obviously, by the nature of a rearrangement, the moment you change one part of the program several other parts (at least temporarily) break. So it's a little 'scary' to rearrange something in a piece of software that already works. I'm asking for advice or some general guidelines: how should I approach a significant refactoring? When you approach rearranging large parts of your application, where do you start? Note that I'm interested only in re-arranging the high-level structure of the app. I have no intention of rewriting local algorithms.

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  • How does ASP.Net MVC differ from Classic ASP (not ASP.Net--the original ASP)

    - by LuftMensch
    I'm trying to get a high-level understanding of ASP.Net MVC, and it has started to occur to me that it looks a lot like the original ASP script. Back in the day, we were organizing our "model"/business logic code into VBScript classes, or into VB COM components. Of course, now we have the additional power of c# and the .net framework classes. Besides the high-level oo and other capabilities in c# and .Net, what are the other major differences between the original ASP and ASP.Net MVC?

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  • vb classic coder to android how to transition?

    - by user366654
    Hi guys. I'm a VB/vba coder and would like to start android dev. Currently I'm learning Java from scratch and. Its quite tough. I've read about oop but never actually written any OO code. Java syntax is also quite foreign but I'm getting the hang of it. My question is, which is absolutely the best transition path for a vb old dog to writing for froyo?

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  • Convert PPT to PNG via python

    - by uswaretech
    I want to convert PPT to png, or other image formats using Python. This question has been asked on SO, but essentially recommends running OpenOffice in headless X server, which was an absolute pain last time I used it. (Mostly due to hard to replicate bugs due to OO crashing.) Is there any other way, (Hopefully using Linux CLI utilities only, and pure Python above them?)

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  • What is a 'Closure'?

    - by Ben
    I asked a question about Currying and closures where mentioned. What is a closure? How does it relate to currying? Additional: Kyle's answer is great but to my poor procedural/OO mind Ben Childs answer is really useful.

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  • Good Java graph algorithm library?

    - by Nick Fortescue
    Has anyone had good experiences with any Java libraries for Graph algorithms. I've tried JGraph and found it ok, and there are a lot of different ones in google. Are there any that people are actually using successfully in production code or would recommend? To clarify, I'm not looking for a library that produces graphs/charts, I'm looking for one that helps with Graph algorithms, eg minimum spanning tree, Kruskal's algorithm Nodes, Edges, etc. Ideally one with some good algorithms/data structures in a nice Java OO API.

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  • tools for quick php development

    - by YsoL8
    I'm a PHP developer looking to speed up my production time, and add a new ability to my CV. I'm after a package that provides the basic CMS features that I can build on for a wide range of purposes. I've heard of PHPcake, Drupal ect but I don't know enough about these to make an informed decision. What alternatives are there? Are they OO, MVC, producedual? If you could point me to some comparisons or give your option of which actually work.

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  • do console apps run faster than windows based app?

    - by omair iqbal
    i am reletivly new to world of programming i have a few performance questions 1. do console apps run faster than windows based app? 2.are languages like c and pascal faster than object oriented languages like c++ and delphi?i know language speed depends more on compiler than on language itself but do compilers for prcedural languages like c and pascal produce faster code than oo ones like delphi,c++(including c++ compilers that can procuce c code) sorry for my bad english

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  • How can I make WWW:Mechanize to not fetch pages twice?

    - by planetp
    I have a web scraping application, written in OO perl. There's single WWW::Mechanize object used in the app. How can I make it to not fetch the same url twice, i.e. make the second get() with the same url nop: my $mech = WWW::Mechanize->new(); my $url = 'http:://google.com'; $mech->get( $url ); # first time, fetch $mech->get( $url ); # same url, do nothing

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  • Do console apps run faster than GUI apps?

    - by omair iqbal
    I am relatively new to world of programming. I have a few performance questions: Do console apps run faster than apps with a graphical user interface? Are languages like C and Pascal faster than object oriented languages like C++ and Delphi? I know language speed depends more on compiler than on language itself, but do compilers for procedural languages produce faster code than OO ones (including C++ compilers that can produce C code)?

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  • Cocoa for the non-techinical

    - by annoyed
    How would you describe and explain Cocoa in non-technical terms, with lots of analogies to common, everyday things. For example, imagine you are describing it to a 5-year-old who keeps asking why? at the end if each explanation. This would invariable delve into the theory of OO so it could get lengthy, but the concept is important to the 'why' of Cocoa.

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  • Best Practices with MVC Route

    - by codemnky
    if this is asked before just point me in the right direction I am a OO and MVC newbie. I am following along the MVC Storefront(a little outdated now) where they are talking about routes and adding them to global.asax.cs My question is this. wouldn't it be better if only 1 route is defined and after that everything is done programatically? I dont want the user to navigate using the address bar thank you

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  • Object Oriented Database - why most of the companies do not use them

    - by GigaPr
    Hi, I am pretty new to programming(just finished University). I have been thought in the last 4 years about Object Oriented development and the numerous advantages of this approach. My question is Isn't it easier to use a pure Object Oriented database in development applications? Why Object Oriented database are not as much diffuse as relational? From my point of view makes sense to use OO database, the latter will avoid the numerous construction necessary for the mapping of complex objects on the tables.

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  • Doctrine: String keys with Array hydration

    - by BenV
    According to their documentation, you should use Array hydration rather than record hydration when retrieving data for read-only purposes. However, this means I have to access the attributes of the retrieved object using arrays and string keys: $user['Phonenumbers'][0]['number'] instead of the OO style: $user->PhoneNumbers[0]->number Now I'm kinda new to PHP, but in other languages I've worked with the 2nd notation would be preferable because typos would be caught at compile time while typos in string literals would not be noticed until runtime. Does this apply to PHP/Doctrine?

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  • why make non-privileged methods?

    - by aharon
    I'm learning JavaScript, and I can't understand why you'd make methods that aren't 'privileged,' that is, that aren't defined in the constructor but rather the class' prototype. I understand the idea of encapsulation and all, but you never encapsulate parts of a class from the rest of it in most of the OO world.

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  • Using inheritance in PostgreSQL

    - by Anton Prokofiev
    Hello, All! Is somebody have an experience using inheritance in PostgreSQL? Is it worth to use it, or better to keep hands of :)? In which situation you would use it? To be true I'm a little bit in doubt about mixing relational and OO models...

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