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Writing compilers is not a really a niche activity. If you think of it, every programmer is doing precisely that, defining a specific language for a given domain and then explaining its semantics to the computer. F#, ML and Haskell programmers know that union types are a life-saver for dealing with languages systematically. These types do, however, sometimes grow large, becoming less and less nice to work with. If a 30-case recursive union type, or 2-3 co-recursive 20-30 case union types, is something[...]

We are currently finalizing the 2.4 release of WebSharper. This release is mainly concerned with bug fixes and quality-of-implementation improvements. The exciting part is that we are witnessing about 30%-35% generated code size reduction, and a 40% reduction in compilation time. The optimizer is also more capable, featuring local tail call optimization.

How deep do you think you can nest your closures in JavaScript? Yes, we know there is no tail-recursion, probably no inlining either, we know we should not do this, but sometimes we still do. Before today I expected something like 64-128 levels of nesting to work out fine. In fact, Chrome chokes only at level 512 or so, due to stack overflow - fine. EDIT: There is Bug #517781 reported 2009-09-20, and STILL NOT ADDRESSED. Please upvote it if you can. But Firefox.. At level 16! Reference error: x16 is not[...]

This release ships the preliminary support for mobile devices, a new WebSharper component we call WebSharper Mobile. [more...]