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The time now is Sat 18 May 2013, 01:56 All times are UTC - 4 |
 Forum index » Off-Topic Area » Programming |
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Vala and Genie programming
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| Page 30 of 35 [514 Posts] | Goto page: Previous 1, 2, 3, ..., 28, 29, 30, 31, 32, 33, 34, 35 Next |
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rarsa
 Joined: 29 May 2005 Posts: 3053 Location: Kitchener, Ontario, Canada |
Vala : Although the language is simple, documentation is still lacking so you must resort to look at examples in other languages to understand how to do some things in Vala. It is easier to write maintainable programs. Vala is a more modern language which takes care of many of C pitfalls (e.g. memory management) but to use it properly you better have an Object Oriented background. (most of the examples I've seen are spaghetti code) _________________ http://rarsa.blogspot.com Covering my eclectic thoughts http://www.kwlug.org/blog/48 Covering my Linux How-to Last edited by rarsa on Sun 01 Nov 2009, 23:39; edited 1 time in total |
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rarsa
Joined: 29 May 2005 Posts: 3053 Location: Kitchener, Ontario, Canada |
OK, I'm jumping into the Vala wagon. I started today with Genie but found several little annoyances which, without proper documentation, gave me a headache. So I moved to Vala and it just feels natural. I wrote a little test application that uses Gtk, Glade, and SQLite. Creating multiple windows defined in separate classes and source files. Some of those things are not well documented but I drew from experiences from other languages. I know I'm at the bottom of the learning curve but I hope to put my new learnings to a good use. (time permitting) _________________ http://rarsa.blogspot.com Covering my eclectic thoughts http://www.kwlug.org/blog/48 Covering my Linux How-to |
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BarryK
Puppy Master  Joined: 09 May 2005 Posts: 6854 Location: Perth, Western Australia |
rarsa, Great to "hear" from you again! Ah yes, I always remember your statement that anything with the name "Basic" in it makes you break out in a rash! 
_________________ http://bkhome.org/blog2/ |
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rarsa
Joined: 29 May 2005 Posts: 3053 Location: Kitchener, Ontario, Canada |
I think it is a nice language which I will surely get into once I get my head around Vala which is better documented. I am also a python guy so Genie seemed familiar just that I wasted time with some very basic things: I mixed tabs and spaces and the interpreted got confused until I added the [indent..]. When setting an object method as the event handler I had to do
But if it was a global method
which wasn't documented anywhere. In Vala the def() is not required. Most examples use global methods, not classes so it was quite an experience. So this combined with the indent issue was quite confusing: The myMethod() looked indented as other class methods (4 spaces), but it really wasn't due to using tabs (1 tab) so it was interpreted as a global method outside the class but without visibility to the private members of the class. enough rambling, I like both languages, I just decided to start with Vala to understand the programing model and then try Genie.
_________________ http://rarsa.blogspot.com Covering my eclectic thoughts http://www.kwlug.org/blog/48 Covering my Linux How-to |
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BarryK
Puppy Master Joined: 09 May 2005 Posts: 6854 Location: Perth, Western Australia |
Oh, I didn't want to imply that Basic and Genie are in the same league. It is just that my memory was jogged, about the comment you made about "anything with Basic in the name" long ago -- or I think it was you, maybe my memory is faulty. It is probably unwise to stir up that tabs versus spaces thing again. It is interesting that Jamie decided to use tabs as the default. Personally, I like tab indents. Very easy to indent consistently, also easy when editing existing text. As long as nobody opens/edits my code in a text editor configured to convert tabs to spaces... _________________ http://bkhome.org/blog2/ |
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BarryK
Puppy Master Joined: 09 May 2005 Posts: 6854 Location: Perth, Western Australia |
Double post _________________ http://bkhome.org/blog2/ |
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rarsa
Joined: 29 May 2005 Posts: 3053 Location: Kitchener, Ontario, Canada |
And no, no intention to stir any debates . Once I understood the [indent=...] things were clear.
Its clearly a matter of preference. Well, back to Vala/Genie _________________ http://rarsa.blogspot.com Covering my eclectic thoughts http://www.kwlug.org/blog/48 Covering my Linux How-to |
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gyro
Joined: 28 Oct 2008 Posts: 289 Location: Brisbane, Australia |
Hi, Is there a .pet of vala 0.7.8 anywhere? I wish to install it on pup-431. There seems to be omissions in Xlib.vapi in vala 0.7.4. gyro Edit: It is x11.vapi not Xlib.vapi. Last edited by gyro on Tue 17 Nov 2009, 03:36; edited 1 time in total |
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ttuuxxx
 Joined: 05 May 2007 Posts: 10720 Location: Ontario Canada,Sydney Australia |
here try this
ttuuxxx
_________________ http://audio.online-convert.com/ <-- excellent site http://samples.mplayerhq.hu/A-codecs/ <-- Codec Test Files http://html5games.com/ <-- excellent HTML5 games
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gyro
Joined: 28 Oct 2008 Posts: 289 Location: Brisbane, Australia |
The updated x11.vapi looks good gyro Edit: Works fine, thanks ttuuxxx |
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tsura
Joined: 01 Dec 2009 Posts: 3 |
Hmm. It's a whole lot easier, but I wouldn't say there's no comparison. It has its similarities, but at least you don't have to deal with header files, having to put functions in certain places, funky less-readable syntax and all that other stuff. Plus you get some nice string functions, such as up(), down(), strip() and split() out of the box. Making a GUI in Vala is easy, too, and although there's not a whole lot of extensively commented-on documentation, you can always look at Gtk documentation for other languages and often figure out the Vala method with ease. I highly recommend learning Vala. It's worth it, I'd say. Here are some helpful links: • http://references.valadoc.org/ • http://live.gnome.org/Vala • http://www.pygtk.org/docs/pygtk/ • etc. Anyway, other, non-Vala sites on Gtk often give information that the Vala sites don't give, so that's why I list a few others. Even the C documentation on Gtk can be quite helpful, actually. Vala is one of the few languages that seems quite easy to use documentation from other languages with. I like to ask questions on the programming forum at Ubuntuforums. People don't always answer, but they do often enough that it's worth it. |
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ljfr
Joined: 23 Apr 2009 Posts: 176 |
Hi, Note:Some objects of the bellow examples are not freed correctly, some function to do that are missing in the current libxml bindings (reported to gnome bugzilla). following Caleb72 example, I attached a jwm shortcut manager (similar to the one in jwmconfigmgr) in vala using libxml, using xpath to find desired nodes. To compile and run it:
As libxml provide an easy way to handle jwm configuration files, a full jwmconfigmgr in genie/vala might not be so big and ... improved. Regarding compilation, is there a better way to decrease executable size? regards,
Last edited by ljfr on Mon 08 Mar 2010, 07:20; edited 1 time in total |
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technosaurus
 Joined: 18 May 2008 Posts: 3843 |
the compile scripts that were packaged with nicoedit first generate the "C" code and then compile it if you add this after gcc gcc -Os -fomit-framepointer -momit-leaf-frame-pointer -fmerge-all-constants -march=i486 -mtune=i686 ... rest of stuff then better stripping strip --strip-all --remove-section=.comment --remove-section=.note * _________________ Puppy Web Desktop Now with pet packages - Pet Packaging 100 & 101 |
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Lobster
Official Crustacean  Joined: 04 May 2005 Posts: 15109 Location: Paradox Realm |
Hi rarsa
This is quite a technical question - so make the answer fit for an idiot (me) Is Vala more secure than C? Or is it how the code is written? As you know some languages such as javascript are very useful but insecure (so let's base the whole Cloud thing on them  )
Is Vala pronounced valour and suitable for the brave? _________________ Puppy WIKI |
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DMcCunney
Joined: 02 Feb 2009 Posts: 894 |
It is always how the code is written.
And your vast knowledge of how insecure JavaScript is comes from where, exactly? See above about it always being how the code is written. (And while you're at it, define just what you mean by "security".) ______ Dennis |
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