An ordinary googlage (not groups) for "switched from Ruby" reveals one URL:

http://groups.yahoo.com/group/extremeprogramming/message/65634?source=1

where the author switched to Java for speed reasons.  

"switched to Ruby" gives 142 hits.

Drew

> -----Original Message-----
> From: Sean O'Dell [mailto:sean / cSePlsoAfMt.com[REMOVE_THE_SPAM]] 
> Sent: Tuesday, August 19, 2003 1:04 PM
> To: ruby-talk / ruby-lang.org
> Subject: Re: Why did you switch from Python to Ruby?
> 
> 
> I may not be the best qualified to answer this, because I looked at 
> Python, scowled, and ran before I got to do any serious 
> programming, but 
> I have an interesting question you can ask yourself:
> 
> How many posts can you find on Google/Groups (Usenet) from people 
> stating they used to program in Ruby and switched to something else?
> 
> I would wager you will find zero.  This isn't just pro-Ruby 
> FUD, either, 
> I have a point to make.  Everyone has a reason for plugging their 
> favorite language, and you will find arguments for every programming 
> language on the face of the earth, even the worst of the worst.  So, 
> perhaps instead of basing your decision on the presentation of what 
> people have to say (who may not have the charisma to convince you and 
> you will run off with the wrong language), try looking around and 
> finding who left what languages for what reasons and weigh 
> that information.
> 
> My point here is, I have yet to hear of a single person who left Ruby 
> for another scripting language.
> 
> I'm sure people have left Ruby for certain pragmatic reasons ("my job 
> requires me to write in Perl" or "Ruby just isn't as fast as 
> assembly"), 
> but I have trouble imagining even one person leaving Ruby because it 
> wasn't a good enough script language for them.  You can find 
> people who 
> never tried it, or tried it for a day and missed their old language 
> Perl/Python/Bash/Basic so much they had to go back, but I 
> doubt you can 
> find any Ruby-expatriates among the group of people who have 
> given it a 
> solid try.
> 
> Go Google for people who left Ruby and count them and enumerate their 
> reasons, if any.  Ponder that for awhile.
> 
> 	Sean O'Dell
> 
> Brandon J. Van Every wrote:
> 
> > This question is only meant to apply to people who used to 
> use Python, 
> > but switched to Ruby.  Why did you do so?
> > 
> > Motive for my question: I am language / platform shopping and 
> > comparing the pros and cons of Python, C#, and anything 
> that comes up 
> > on the radar in the course of it.  A lot of people who know about 
> > Python seem to know about Ruby.  Someone in 
> comp.lang.python suggested 
> > that I should ask this particular question here to get more 
> complete 
> > opinions.  The c.l.p people are mostly happy with Python 
> and see few 
> > if any advantages to Ruby, although there is some discussion and 
> > dissention.
> > 
> 
>