My main languages are C++, Swift, F#, C# and Objective C. I've also done a fair bit of Python, Javascript and Java - and even some D. I've toyed with Ruby, Scala, Haskell and Kotlin.
I've done my share of XML, XPath, XSLT and XQuery, HTML, CSS and SQL and all the rest.
In the real world I also like to write music - but now have three children so not much chance of that.
I have an open source C++/ Objective-C automated test framework called Catch.