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?
Programming language popularity: Is there data on migration trends?
programming languages;research;migration