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Albatross formerly called Modern Eiffel is availableSome of you might have followed some of my posts during 2012/2013 where I described the design of a programming language which allows static verification. The previous working title had been "Modern Eiffel" since my first attempt had been to create a variant of Eiffel which allows static verification. During the language design more and more weaknesses of Eiffel popped up which are in the way to do static verification. The most prominent weak point is that Classical Eiffel is not type safe. The result of my language design activities is a new language which has some syntactic resemblance to Eiffel. However semantically the new language now called Albatross is more like Coq or Isabelle because it has a functional core and it allows to state assertions and prove them. The last to years I have worked on a compiler and verifier for the language. The effort clearly has been underestimated by me and the oneyear project has already taken two years and the available implementation has still a lot of restrictions. However the theorem prover works quite well and it certainly will take some time to complete the compiler. For those of you who know Coq you might enjoy the capabilities of the proof engine and enjoy the fact that there is no extra proof language and all proofs are expressed by pure statements in predicate logic. Proof automation is done by predicate calculus as well and no by an integrated language like Ltac. Therefore the language is easier to learn than Coq, because every programmer has a well developed intuition about logic. You can find the downloadable version of the compiler and a language description at the Albatross website. By hbrandl at 20150501 00:42  LtU Forum  previous forum topic  next forum topic  other blogs  4895 reads

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