Articles

Whiley v0.4.1 released!

The next release of the Whiley Development Kit is upon us.  This is about six months since the last official release and, in the meantime, a lot has been going on!  For example, there have been more than ten releases of the Whiley Compiler (WyC) itself on Maven central.  The main updates are:

RFCs.  . . . → Read More: Whiley v0.4.1 released!

Whiley v0.4.0 Released!

The next release is finally upon us. This one has been a long time coming, and its going to take a while before it settles down again!! Work on this release has been ongoing since February, though partial changes were released in v0.3.40. In that time, a significant portion of the compiler has been . . . → Read More: Whiley v0.4.0 Released!

Mixfix Function Syntax for Whiley

Today I saw an interesting talk about mix-fix function syntax.  The idea is to allow a more complex syntax for declaring and calling functions, rather than the very common “uniform” style. Consider the call, f(x,y), to a single function (e.g. declared f(int,int)) accepting two parameters. With mixfix functions, we can break our function names . . . → Read More: Mixfix Function Syntax for Whiley

Flow Typing with Constrained Types

Flow-sensitive typing (a.k.a. “Flow Typing”) is definitely getting more popular these days. Ceylon, Kotlin, TypeScript, Racket, Whiley all support flow typing in some form. Then, of course, there’s Facebook Flow and the list goes on!

Recently, I’ve made some fairly major updates to the internals of the Whiley compiler (basically, redesigning the intermediate language). . . . → Read More: Flow Typing with Constrained Types

Reference Lifetimes in Whiley

The concept of lifetimes was pioneered in the Rust programming language, and builds on earlier notions of regions and ownership types. Lifetimes are considered one of Rust’s “most unique and compelling features”.

Recently, the concept of reference lifetimes has been added to Whiley by Sebastian Schweizer (@SebastianS90). In this post, I’m going to try . . . → Read More: Reference Lifetimes in Whiley

Whiley v0.3.40 Released!

The next version of Whiley is upon us, and this one includes a bumper package of changes.  In particular, I am very excited by the introduction of reference lifetimes into Whiley.

ChangeList Reference Lifetimes (#642).  This represents a fairly significant step forward in the evolution of the Whiley language.  Reference lifetimes have been implemented . . . → Read More: Whiley v0.3.40 Released!

Whiley v0.3.39 Released!

Progress has slowed on Whiley now that Trimester 1 and my SWEN221 class with 220+ students has begun!  Despite this, development continues with more contributions from others which is great.  This release is largely a “cleaning up” and “bug fixing” release, rather than landing any big features.

ChangeList Parameterised Test cases (#580,#588).  Thanks to . . . → Read More: Whiley v0.3.39 Released!

Whiley v0.3.38 Released!

Finally, just over one month since the last release of Whiley, version v0.3.38 is released today! The list of changes is reasonably large and we should expect lots more going forward …

ChangeList Removed Tuple Types (#537).  Part of my ongoing work to simplify the language.  Tuple types were not heavily used in any . . . → Read More: Whiley v0.3.38 Released!

Whiley v0.3.37 Released!

Another big update to Whiley landed today, and includes a whole raft of changes. In particular, various algorithms in the automated theorem prover have been reworked to improve performance (though more still needs to be done here). A rough summary of the changes in this version is:

Performance Improvements for Automated Theorem Prover.  In . . . → Read More: Whiley v0.3.37 Released!

Whiley v0.3.36 Released!

The next version of Whiley is upon us.  Whilst predictably late, this release packs quite a punch and contains a range of changes to the language syntax, and critical updates to the verifier.  Certainly, this version is capable of verifying more programs than any previous version.  The summary of changes includes:

Update list to . . . → Read More: Whiley v0.3.36 Released!