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The L Programming Language & System

L is both a language and an operating environment, like Smalltalk. It is capability-secure and distributed, like E. The language is a derivative of lambda calculus, hence it is small, block-structured, dynamically-typed, and functional. State is implicitly threaded through all function calls and returns, allowing simulation of dynamic scope and side-effects. Each thread runs in its own transaction, upon completion its state changes are committed. Any concurrent threads that conflict are aborted and re-executed at a higher priority. Each commited state change is an event. Event handlers spawn new threads (repeating the cycle).

Draft Papers


  • - Emulation in Squeak. Not yet complete, but usable, especially the user interface.

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