Thomas' Blog - Latest Comments

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

Kham Mang — Wed, 16 May 2012 11:18:20 -0000

Thanks for your time

Re: Boot on your USB Drive in VirtualBox 4

Fulco — Tue, 24 Apr 2012 08:52:29 -0000

Thanks

one remark : on my Linux Fedora, VBoxManage works for user root but not for standard user

one problem : the importation doesn't work :
p, li { white-space: pre-wrap; }

Impossible d'ouvrir le disque dur /home/pfulconi/.VirtualBox/HardDisks/usb.vmdk.
The medium '/home/pfulconi/.VirtualBox/HardDisks/usb.vmdk' can't be used as the requested device type.

Code d'erreur :
NS_ERROR_FAILURE (0x80004005)
Composant :
Medium
Interface :
IMedium {53f9cc0c-e0fd-40a5-a404-a7a5272082cd}
Fonction appelée :
IVirtualBox {c28be65f-1a8f-43b4-81f1-eb60cb516e66}

Re: Python VS Ruby through a concrete GUI example (Qt)

Peter — Fri, 20 Apr 2012 04:45:50 -0000

Thank you for this article.
I'm actually going to write a paper about my research to the difference between Ruby and Python for school, I'm just doing some 'pre-research'.
I did tend to choose Python as the language I like best but I didn't really know why. I guess it's because I heard a little more about Python than about Ruby. 2 classmates recently did some research to Ruby for the same course, and they came to the conclusion that it was a little hard to learn but that the features are pretty cool. Other things that I read about Python vs. Ruby are indeed that Python is easier to learn but that Ruby is more fun to write in.

I'm going to make up an imaginary problem situation as in a need for some application, here I will be able to use Python or Ruby for programming the application. I'm currently still thinking of one while I'm doing the 'pre-research' and your article helped me with this.

Regards,
Peter

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

William Walker — Sat, 31 Mar 2012 05:05:06 -0000

I am very pleased to find this blog. I want to thank for your time for this wonderful read!!! Keep Sharing, I'll surely be looking for more.

Re: Boot on your USB Drive in VirtualBox 4

karl — Wed, 22 Feb 2012 14:36:29 -0000

in Linux, instead of using the command:
VBoxManage internalcommands createrawvmdk ... could you also first create the vdi or vmdk file on the local filesystem, move the file tothe USB drive, and make a link (ln -s) to the moved file Éuse ln -s to create a symbolic link to

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

ThomasDalla — Thu, 09 Feb 2012 05:35:12 -0000

Hi Priya,

The mobile application is only a front-end.
To fetch data from an existing MySQL database, you will need a back-end service that connects to the database and call that service from the mobile application (from RhoMobile through an XHR request).

The back-end service is up to you. If you already have a MySQL database, you probably also already have a back-end service to fetch data (in PHP/Python/Ruby/ASP/whatever).
The easier is to render in json or xml from your back-end service and fetch it with Rhomobile.

Cheers,

Thomas

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

Priya Saini — Thu, 09 Feb 2012 05:30:48 -0000

Hi,
I trying my hand on Rhomobile and succeeded in creating a small app. My next requirement is to fetch data from an already existing mysql db.
Can anyone give me some directions.
TIA,

Priya Saini

Re: Boot on your USB Drive in VirtualBox 4

selkii — Mon, 06 Feb 2012 17:07:37 -0000

Awesome, it worked, thanks loads :) this makes imaging way easier now.

Re: Python VS Ruby through a concrete GUI example (Qt)

Justin Malcolm — Sun, 29 Jan 2012 11:33:03 -0000

Thank you for this write-up Thomas. The conclusion that Ruby is a little more pleasing and Python a little more serious is the same one that I have drawn myself.

What really strikes me about your write-up is how few real difference there are between the languages themselves. It was the tooling (and performance) that required you to choose one over the other. As a contrast, Java and C# are often considered very similar languages but you would encounter far more difference in rewriting a modern C# in Java than you did moving from Ruby to Python.

Now, having used "blocks" most seriously in other languages like C# and Scala, I know that sometimes blocks offer more than just the cosmetic differences detailed above, but otherwise it is actually amazing the two languages are so similar.

Re: Boot on your USB Drive in VirtualBox 4

Sghazagh — Thu, 26 Jan 2012 19:01:40 -0000

That was greate.Thanks for sharing...

Re: Boot on your USB Drive in VirtualBox 4

Glennister — Fri, 13 Jan 2012 09:58:32 -0000

Many Thanks, you have saved me loads of time :-)

Re: Boot on your USB Drive in VirtualBox 4

ThomasDalla — Tue, 27 Dec 2011 06:54:49 -0000

Oh, VirtualBox itself needs to be launched as an administrator as well?
Thanks for the update.

Re: Python VS Ruby through a concrete GUI example (Qt)

ThomasDalla — Tue, 27 Dec 2011 06:52:09 -0000

Hi Alpheus,

Thanks for sharing your point of view!I'm curious to know what are your feelings about Ruby after having used Python a lot.
I have learned Ruby before learning Python so I'm interested in the experiences of people having done the opposite!
I never tried purely functional programming languages like Haskell but that definitely is on my list of future programming languages to have a look at when I have time...

And I am not a mathematician but I can understand that you are not satisfied by either Python or Ruby, that do not pretend to be the standard for mathematicians, but I'm sure you can be ecstatic with other languages ;)

Re: Boot on your USB Drive in VirtualBox 4

Toto — Mon, 26 Dec 2011 04:27:45 -0000

Thx good tuto

as already mentionned you'll need to launch cmd.exe and Virtualbox as an administrator to make it work on Windows 7.

Gzh

Re: Boot on your USB Drive in VirtualBox 4

Maaone — Wed, 14 Dec 2011 04:41:36 -0000

Thankkkk so much it's works. I use windows 7th 64 bit, also try installing win 7th 64 bit version on my virtualbox :D

Re: Python VS Ruby through a concrete GUI example (Qt)

Alpheus — Thu, 08 Dec 2011 11:30:09 -0000

I use Python heavily for work, and have used it for projects. Pending Board approval, I'm likely going to be "forced" to learn Ruby (as if I could be "forced" to learn a new language! No, I take that back. There's always C++ and Perl that I do NOT want to learn.) I currently have no preference for one language or the other; either is better than PHP. Based on this article, I think I'm going to be more inclined to like Ruby over Python...

In my attempts to learn Common Lisp and Haskell, though, I'm convinced that both are better than either Python or Ruby, and because of the flexibility of Common Lisp, I'm inclined to favor CL over Haskell. But, like Daniel before me, I'm heavily biased: I'm a mathematician, and these languages have a certain mathematical essence that neither Python nor Ruby will ever have!

Re: Python VS Ruby through a concrete GUI example (Qt)

NeNSha — Tue, 18 Oct 2011 00:56:17 -0000

In my opinion Python is better even with a syntax. It's just Qt integration Ruby syntax looking like a bit better.

Re: Boot on your USB Drive in VirtualBox 4

Marc Richter — Sat, 15 Oct 2011 06:25:39 -0000

Thanks a lot !!

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

Kapil_yrk — Fri, 05 Aug 2011 00:29:33 -0000

Please share more rhodes application types

Re: Python VS Ruby through a concrete GUI example (Qt)

ThomasDalla — Wed, 22 Jun 2011 20:58:06 -0000

Hi Daniel,

Thanks for your comment!
Don't worry for your English, I'm not a native English speaker neither and your English is very good.

I totally agree with you that in real life you have to make choice between "fun" and "work".
That's why in the conclusion I am in favour of Python ;)

Re: Python VS Ruby through a concrete GUI example (Qt)

Daniel — Mon, 20 Jun 2011 22:50:28 -0000

By the way, sorry if my english sucked, I am not a native speaker.

Re: Python VS Ruby through a concrete GUI example (Qt)

Daniel — Mon, 20 Jun 2011 22:48:40 -0000

The choice of language is quite subjective and depends on the circumstances. You prefer ruby for it is pleasurable for you to write ruby code, on the other hand I choose python.

I chose python because I am mathematician, so my applications are always mathematical applications. I gave ruby a shot ages ago and I had a lot of fun using it, I also had fun writing python though, I think one can actually use both depending on your specific needs (come on, it's programming not religion!). In my case python has an amazing library for linear algebra and other things I usually need (numpy , scipy). And Sage is build using python.

Sometimes you have to give up coding pleasure for better tools. If I was using a programming language just because of coding please and beauty, I wouldn't use python nor ruby, I would use Haskell for sure.

Cheers mate.

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

Bhagyavendra — Sat, 14 May 2011 05:51:28 -0000

nice tut..

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

Thomas — Tue, 26 Apr 2011 19:36:50 -0000

Hi Shiny,

Well I would do the same as I'm doing in this post except I will use a CSV parser instead of an ATOM parser.
There might be already some CSV parsers available, or you can write yours (I think a csv file is just a semi-column or whatever special character separated file).
Have a look to the Rhomobile doc: http://docs.rhomobile.com/
You can also ask help directly on the community: https://groups.google.com/foru...

Good luck.

Re: Quickly build smartphone applications (iPhone, Android, WP7, BB, Symbian) with Rhomobile Rhodes

Shiny — Tue, 26 Apr 2011 17:28:36 -0000

Hi Thomas,
I am very new to Android. I am trying to develop an Android app and right now what I am trying to do is import a .csv file and display the content on to a datagrid. The .csv file gets populated every second with live data. I am not sure how to import the .csv file. Could you give me some lead please.