Archive of posts from 2018

• Aug 24, 2018: Efficient Deterministic Replay for Actors

  Debugging concurrent systems is pretty hard, and we worked already for a while to make things a bit better. However, a big remaining problem is that bugs are not easily reproduced.

• Apr 17, 2018: A Typical Truffle Specialization Pitfall

  Writing specializations is generally pretty straight forward, but there is at least one common pitfall. When designing specializations, we need to remind ourselves that type-based specializations are technically guards.

• Mar 13, 2018: How to Design Collection Libraries?

  Programming languages naturally come with a library of containers or collection types. They allow us to easily work with arbitrary number of elements, which is something all major languages care about. Unfortunately, it seems like there is not much writing on how to design such libraries. Even asking a few people that worked for a long time on collection libraries did not yield much of a structured approach to such a central element for our languages. The one major piece of writing we found is the Scala people describing their experience with bit rot and how they redesigned their collection implementation to avoid it.

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