Take the 2-minute tour ×
Programmers Stack Exchange is a question and answer site for professional programmers interested in conceptual questions about software development. It's 100% free, no registration required.

I'm looking for historical statistics showing approximately how many developers of some language X switch to language Y. It should be the kind of data that answers question such as:

  • Are former VB6 developers using mainly C# or VB.NET now?
  • Have many Java developers switched their main development language to Scala so far?
  • etc.

I'm not doing a study, I'm mainly curious. Is there some website or institution that collects and publishes such data?

share|improve this question
1  
I agree this isn't an easy job. Maybe you should conduct a survey but the sample size should be big enough to show the overall picture. –  Erica Xu Oct 20 '11 at 9:37
2  
the trouble there is it will be very hard to eliminate selection bias i.e. a survey about switching to scala will probably disproportionally attract scala enthusiasts –  jk. Oct 20 '11 at 9:50
    
@jk. ... and also attract Java enthusiasts who think that Scala is a massive affront to the original goals and intentions of the Java language. cough –  maple_shaft Oct 20 '11 at 13:36

3 Answers 3

Well, there's popularity stats here and especially here - with deltas but I don't know of anything measuring who's moving to what. It would be interesting to plot but I'm not sure if it would be an easy thing to capture.

share|improve this answer
    
Probably good for overall popularity, but what would be more relevant would be figures for usage and movement within domains. –  NWS Oct 20 '11 at 9:44
    
even for that you have to bear in mind that in absolute terms probably every language is increasing, tiobe and langpop show relative trends (if anything) –  jk. Oct 20 '11 at 9:52

I'm not sure that "migrated from" is even an easily defined metric, let alone easily measured. For example, I learned python last year for internal-use scripting, but our product is still written in C++. You could say I migrated from C++, but python really replaced perl for me, which I gave up because none of my colleagues knows it anymore. I've done projects in Java and php in the last year as well, but I wouldn't say I "migrated to" those either, both of which were "day job" languages for me in the late 90s.

In other words, measuring migration assumes almost everyone is a monoglot, which isn't a valid assumption.

share|improve this answer

ohloh.net collects information on open-source projects. It counts things like total number of lines committed for each language - number of contributors making commits for each language etc. It can be interesting to see the trends. For example, the number of contributors making commits of C code is seeing a small lift since 2010, although the total number of commits is still falling sharply. This would indicate that more people are committing C code, but in larger chunks. It's not possible from these stats to say where those extra contributors may have migrated from though..

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.