Re: Java to D
On Saturday, 31 August 2019 at 16:44:01 UTC, Patrick wrote: On Wednesday, 28 August 2019 at 10:33:33 UTC, GreatSam4sure wrote: On Wednesday, 28 August 2019 at 09:35:55 UTC, Jacob Carlborg wrote: [...] Thanks i will check it up Take a look at JavacTo https://sourceforge.net/projects/javacto/ This is a java tool that uses the javac compiler to translate java to another language. And includes a java to D code set. It is a very visual tool and has great animation during translation and works well while using the java debugger. I include “How to get started with Eclipse”. You can find more translations statistics at this post: https://forum.dlang.org/thread/yuamvgsdfshgrbesm...@forum.dlang.org#post-yuamvgsdfshgrbesmjlt:40forum.dlang.org Hope this helps Patrick Thanks a lot. I will dive in soon. I am in the mid of a project now
Re: Java to D
On Wednesday, 28 August 2019 at 08:14:25 UTC, GreatSam4sure wrote: Good day everyone. DWT is a library for creating cross-platform GUI applications. It's a port of the SWT Java library from Eclipse. Currently supported platforms are Windows, using Win32 and Linux, using GTK. [...] Perhaps this tool could be useful https://github.com/jtransc/jtransc
Re: Java to D
On Wednesday, 28 August 2019 at 10:33:33 UTC, GreatSam4sure wrote: On Wednesday, 28 August 2019 at 09:35:55 UTC, Jacob Carlborg wrote: On 2019-08-28 10:14, GreatSam4sure wrote: [...] DWT is ported manually from Java. Here's a very short guide [1]. That guide is probably written for D1. [...] I'm working on a tool do be able to automatically convert Java code to D code [2]. It's been a while since I did any actual work on that project. As far as I can remember, it can do a syntactic translation of most Java code. What's remaining is the semantic translation. [1] http://dsource.org/projects/dwt/wiki/Porting [2] https://github.com/d-widget-toolkit/jport/tree/dev Thanks i will check it up Take a look at JavacTo https://sourceforge.net/projects/javacto/ This is a java tool that uses the javac compiler to translate java to another language. And includes a java to D code set. It is a very visual tool and has great animation during translation and works well while using the java debugger. I include “How to get started with Eclipse”. You can find more translations statistics at this post: https://forum.dlang.org/thread/yuamvgsdfshgrbesm...@forum.dlang.org#post-yuamvgsdfshgrbesmjlt:40forum.dlang.org Hope this helps Patrick
Re: Java to D
On Wednesday, 28 August 2019 at 09:35:55 UTC, Jacob Carlborg wrote: On 2019-08-28 10:14, GreatSam4sure wrote: [...] DWT is ported manually from Java. Here's a very short guide [1]. That guide is probably written for D1. [...] I'm working on a tool do be able to automatically convert Java code to D code [2]. It's been a while since I did any actual work on that project. As far as I can remember, it can do a syntactic translation of most Java code. What's remaining is the semantic translation. [1] http://dsource.org/projects/dwt/wiki/Porting [2] https://github.com/d-widget-toolkit/jport/tree/dev Thanks i will check it up
Re: Java to D
On 2019-08-28 10:14, GreatSam4sure wrote: Good day everyone. DWT is a library for creating cross-platform GUI applications. It's a port of the SWT Java library from Eclipse. Currently supported platforms are Windows, using Win32 and Linux, using GTK. What are the tools and step involved in converting a java GUI toolkit to D2? Is it possible in D2? What are the tools and steps involved? Is there any tutorial involve? Can one get a mentor for such a program in the forum DWT is ported manually from Java. Here's a very short guide [1]. That guide is probably written for D1. I am thinking if it is possible to port JavaFX to D(i.e. DFx). That will be nice for the D language. Javafx is a nice GUI toolkit. I am basically interested in GUI desktop app that connects to the web for the now. I can do that on Java but I would love to use D if it is possible. I will be happy to be linked to material, tools, and tutorial that will be of help I'm working on a tool do be able to automatically convert Java code to D code [2]. It's been a while since I did any actual work on that project. As far as I can remember, it can do a syntactic translation of most Java code. What's remaining is the semantic translation. [1] http://dsource.org/projects/dwt/wiki/Porting [2] https://github.com/d-widget-toolkit/jport/tree/dev -- /Jacob Carlborg
Java to D
Good day everyone. DWT is a library for creating cross-platform GUI applications. It's a port of the SWT Java library from Eclipse. Currently supported platforms are Windows, using Win32 and Linux, using GTK. What are the tools and step involved in converting a java GUI toolkit to D2? Is it possible in D2? What are the tools and steps involved? Is there any tutorial involve? Can one get a mentor for such a program in the forum I am thinking if it is possible to port JavaFX to D(i.e. DFx). That will be nice for the D language. Javafx is a nice GUI toolkit. I am basically interested in GUI desktop app that connects to the web for the now. I can do that on Java but I would love to use D if it is possible. I will be happy to be linked to material, tools, and tutorial that will be of help
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On Friday, 28 February 2014 at 12:10:17 UTC, Bienlein wrote: This topic mentions IMHO an important point: D is not only interesting for C++ people, but also for Java developers. Companies that are happy with Java may have little incentive to change to D or maybe Go. But when starting something new D can be an alternative to Java as it also can be used for application development to some extend (has a GC, fast build times and other things that result in good productivity). Someone like me who has spent his career with Smalltalk and Java and doesn't know a thing about systems programming can get along with D quite easily. Something like a "D for Java developers" user guide would make sense IMHO. Well, not exactly what you are after. But there have been Java related guides, which could use some updating and moving to the new wiki: http://wiki.dlang.org/Coming_From/Java http://www.prowiki.org/wiki4d/wiki.cgi?ComingFrom/Java http://www.prowiki.org/wiki4d/wiki.cgi?JavaToD
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
This topic mentions IMHO an important point: D is not only interesting for C++ people, but also for Java developers. Companies that are happy with Java may have little incentive to change to D or maybe Go. But when starting something new D can be an alternative to Java as it also can be used for application development to some extend (has a GC, fast build times and other things that result in good productivity). Someone like me who has spent his career with Smalltalk and Java and doesn't know a thing about systems programming can get along with D quite easily. Something like a "D for Java developers" user guide would make sense IMHO. D has better performance than Java and better productivity than C++. Java is starting to get polluted with several things like dependency on XML which really degrades productivity. I don't spend my time looking for bugs in source code, but in XML definition files (every framework has XML, some even allow you to define logic in XML like Apache Camel). And this takes much more time than when looking into code. Then Java suffers from its threading model which is suitable for general purpose programming, but not for web applications. For WhatsApp a single machine holds over a million network connections (see https://www.erlang-solutions.com/about/news/erlang-powered-whatsapp-exceeds-200-million-monthly-users) due to Erlang's threading model being able to get this accomplished. In Go more than 100k network connections is also not a problem (according to some tweet by Rob Pike). What seems to attract people to Go is Go's threading model that is very well suited for network programming and server-side web development. But Go's language is simplistic and that probable won't change. My impression is that this is on purpose. They want a modernized C and that's it. So there is room for D here for server-side development à la Go but with a high-level language. There is really hell going on in Go's user forum. Multi-threading and concurrency through goroutines as well as good libraries for network programming seem to be the driving factors for Go. D is really modelling power as well. That's the big win over Go. No Java/EE architect will accept a language without inheritance nor method overriding. I think there is no feature in Scala that D doesn't have (except implicits, which is a good thing not to have). On the contrary D has immutable types and pure functions. Things that aren't possible in Scala due to limitations of the JVM or need for interoperability. -- Bienlein
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On Thursday, 27 February 2014 at 23:12:16 UTC, Ali Çehreli wrote: Because this is actually a newsgroup (i.e. NNTP), pretending to be a forum. :) I could kinda tell from both the URL and the "Posting to digitalmars.D.learn" line. I've never used a newsgroup before, cool.
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On 02/27/2014 03:09 PM, DS6 wrote: Also *3: Not having to make an account to post here is also nice. I don't really like signing up for things. Because this is actually a newsgroup (i.e. NNTP), pretending to be a forum. :) Ali
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
Also *3: Not having to make an account to post here is also nice. I don't really like signing up for things.
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On Thursday, 27 February 2014 at 22:58:40 UTC, Ali Çehreli wrote: But of course: :) Yeah I found that out already; I have schoolwork to do but D is really interesting and stuff and argh. I think one of the things I also like about D so far is the community. Most Java communities, when I asked questions about hard/not-before-accomplished tasks, were either completely ignored or "LOL GO USE THIS LIBRARY" when I wanted to do it myself. I have a feeling it's not going to be like that here, with the way all of you cool doods have been replying. Also, not having headers is totally rad. I never liked headers. Having the compiler handle that for you is very nice. Also also, I've noticed that D supports lax typecasting through the "auto" type, oh God I didn't even know that that is wonderful.
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On 02/27/2014 02:40 PM, DS6 wrote: > What exactly is the difference between C and D headers? D code that needs to use a C library must use "D bindings" of that C library. Here is Deimos, a collection of D bindings of many C libraries: https://github.com/D-Programming-Deimos More information: http://dlang.org/interfaceToC.html > Interesting that Facebook uses it, not to mention even such a > high-scaled company should praise D over C++. A recent article about that: https://code.facebook.com/posts/729709347050548/under-the-hood-building-and-open-sourcing-flint/ > I'll probably find this out on my own eventually, but does D support > operator overloading? But of course: :) http://dlang.org/operatoroverloading.html Ali
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
What exactly is the difference between C and D headers?
D itself does not use headers at all. But you will need "D
headers", if you want to call a C library from D. The translation
is mostly syntatic and straight forward like:
* replace #define-constants with enums
* replace macros with (templated) functions
* replace #ifdef with static-if / version
etc...
Metaprogramming is always welcomed; makes things much easier in
the long run.
I'll probably find this out on my own eventually, but does D
support operator overloading? That would be simply amazing.
Absolutely it does. Even in a more "meta"-way than c++:
struct S
{
int x;
S opBinary(string op)(S other) // overloads + - * / % all at
once
{
return mixin("x "~op~" other.x");
}
}
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On Thursday, 27 February 2014 at 22:40:36 UTC, DS6 wrote: What exactly is the difference between C and D headers? D does not have any separation between header and code files like C or C++. There are files with the .di extension which are similar, but not quite the same. What he meant is that you need to bring the declaration code found in header files into your D code so that the compiler knows they exist.
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On Thursday, 27 February 2014 at 10:52:51 UTC, John Colvin wrote: It's a flexible, well designed language. Many things that are complex and/or slow in other languages can be written in a readable and performant manner, with fewer nasty surprises. I find I usually run into some "nasty surprises", especially when dealing with complex tasks, in Java, having to constantly recompile and retest my code. This is a welcomed change. Fine as long as you stick with x86/x86_64 CPUs and a normal desktop operating system, i.e. Linux, Windows, OS X, ***BSD If I ever decide to go multiplatform with my applications, those would be all I would target anyway. My code would be open-source regardless, so it's not like someone couldn't port it. Support for other types of systems is work-in-progress, mostly focused around gdc/ldc as dmd is an x86/x86_64 only compiler. Bear in mind that the same frontend is used for all 3 compilers, dmd is the reference compiler, gdc/ldc lag 1 release behind dmd. I've grown up on x86 so other architectures are pretty far in the future. You can use any C library from D, but you have to port the headers. This has been done for many libraries What exactly is the difference between C and D headers? = Links to other languages include https://github.com/JakobOvrum/LuaD That is a _very_ welcomed link. Lua would have to be my favorite scripting language to use. There are numerous Java ports for Lua, but they're much harder to develop for than the original C variant. Depends on your definition of enterprise. There are companies that use D (http://wiki.dlang.org/Current_D_Use). Interesting that Facebook uses it, not to mention even such a high-scaled company should praise D over C++. In my opinion, D code is highly scalable and maintainable. In particular, the strength of D's metaprogramming makes for flexible code. Metaprogramming is always welcomed; makes things much easier in the long run. I'll probably find this out on my own eventually, but does D support operator overloading? That would be simply amazing. Overall, D is a pragmatic language. Thank you for taking the time to answer my questions, I am much more interested in D now.
Re: Switching from Java to D: Beginner questions, multiplatform issues, etc.
On Thursday, 27 February 2014 at 10:23:40 UTC, DS6 wrote: Okay, down to the questions I have about D: - Why should I use D over another language? What general benefits does it provide me, in relation to the points I made about it above? Is it a solid base to build off of, but still simple in nature? It's a flexible, well designed language. Many things that are complex and/or slow in other languages can be written in a readable and performant manner, with fewer nasty surprises. - How is multiplatform compilation handled by D? Fine as long as you stick with x86/x86_64 CPUs and a normal desktop operating system, i.e. Linux, Windows, OS X, ***BSD Support for other types of systems is work-in-progress, mostly focused around gdc/ldc as dmd is an x86/x86_64 only compiler. Bear in mind that the same frontend is used for all 3 compilers, dmd is the reference compiler, gdc/ldc lag 1 release behind dmd. - How well supported is D? I've read that D is still relatively... Not new, or young, but less known than other languages. Does it have support for major libraries, like SDL? Aside: Whether or not these libs are "official" or not doesn't matter to me, they usually aren't anyway. You can use any C library from D, but you have to port the headers. This has been done for many libraries, see here: http://code.dlang.org/ There are some nice D-style wrappers that exist as well. Links to other languages include https://github.com/JakobOvrum/LuaD, https://bitbucket.org/ariovistus/pyd C++ libraries are less well supported, but there has been a certain amount of success. - How is D used in the enterprise world? Depends on your definition of enterprise. There are companies that use D (http://wiki.dlang.org/Current_D_Use). - Lastly, and probably most important, is D code scalable and easy to maintain? You never know, something I make could gain popularity and I would suddenly need to mass-produce and heavily modify my code to suit the needs of whatever crowd of people suddenly want my services, whatever services I may offer. Is going large-scale from an initially small-scale project or otherwise prototype at least comparable, say, Java (which is quite easy to manage large-scale if you do things right)? In my opinion, D code is highly scalable and maintainable. In particular, the strength of D's metaprogramming makes for flexible code. Overall, D is a pragmatic language.
Switching from Java to D: Beginner questions, multiplatform issues, etc.
Though this post may seem long, my questions are indeed asked. I just kinda started typing and didn't stop; I guess this is both a question post and a vent post. Please bear with me. Hello, I'm a hobbyist programmer, and I'm tired of the way things are going. I'm looking for a change. I must admit, I've been pampered most of my programming life: I've consistently used higher-level languages, like Java (which I have been using as of late), that do all the work for you. But I find it's hard to quickly prototype and implement new ideas and to test new code because of that. Creating a solution to an otherwise simple task takes numerous new and extended classes and lots of time. There's always the option of choosing a dedicated external library or otherwise development environment to build off of a central idea, but I want to keep things simple and work with the core essentials and not resort to learning the ins and outs of another codebase. Sadly, Java's "core essentials" are absolutely humungous and hard to keep track of. If I feel the need to search for an alternative development environment just to get a more focused feature subset that may or may not already exist in part or in full in a language, I don't really think that language is right for me and what I want to accomplish, whatever that may be at the time. As an example, I would occasionally find myself making some code that does nearly the same thing as an already-implemented class in the JDK/JRE, simply because I forgot to do any research on the topic beforehand or I didn't think there was already a solution for my problem. Overall, using Java takes massive dedication for the language and a large, pre-defined, solidly-built goal, and I may not have some or all of the previous at any point in time while both fleshing out my ideas and working on already-established projects. When programming in Java, there is a large number of classes that are available for one to use, that are fully-featured and complete, and function extremely well for their intended purpose. However, the way Java is set up makes me feel like I have to twist and bend those classes into the idea I see in my head, instead of using them as a base like they're intended to be used. I could always start from scratch and build my classes how I want, using other classes only when necessary, but what's the point in that when there's already classes out there that do what I want, and probably more efficiently? Instead I dig through them until I find something that works how I want it to and may occasionally miss something that works better or fits my desires better because I simply didn't notice it or got fed up with looking and stopped. It's been like that for all of the more expansive higher-level languages I've used, not just Java. (Aside: Don't get me wrong, I am NOT bashing Java. It's an excellent, solid framework that can handle damn near anything you throw at it, and usually in a very skilled, complete, and well-thought-out manner. It's great for both small- and large-scale, enterprise operations, and is able to function at full-capacity in the most intense of circumstances. It certainly has its place, a place it holds firmly and effectively, but I don't really think it's good for me; I'm not exactly some bigwig company that needs XYZ huge projects produced.) It really comes down to what you're looking for. Honestly, I'm still not sure what I'm looking for, but I know I love programming and I want to find my calling for it. I've always wanted to get into general game design but I've never really found anything that truly clicks with me. I've tried other game design-specific solutions, even ones designed for Java like jMonkeyEngine, but development with these types of applications is usually very closed and has that pre-built "here use this class" feeling like Java does. I must sound pretty hypocritical/demanding here; I want a solid base to work off of but I don't want it to feel pre-built? I suppose what I mean is that I want it to work as-is, but I also want things to be bare enough so that I can create what I want without worrying about what class to use or what method to override. Java isn't just your average framework, it has everything you could ever need... And that's not really what I want. I want a skeleton, so that I can fill in the parts that I need to how I want, without resorting to using X number of classes. Not only do I feel that restricts my creative abilities, but it's generally difficult. That's part of the reason I chose D: It has all the advantages of using a low-level language, mainly in its simplicity, but with the ease of use and completedness that comes from using a higher-level language, or as so I've read about it. I want programming to be challenging and engaging, and moreover fun and enjoyable, while having it not being a chore just to accomplish little goals. Java kinda feel
