What is Rellum?

Rellum is a reactive dataflow systems programming language. A program describes values, events, state, and effects; the compiler turns that graph into deterministic work for each tick.

The language keeps ordinary pure computation separate from external effects. That separation is what lets Rellum reason about ordering, parallelism, and resource access without making every program spell out threads or locks.

line = event(stdin_line!())
message = "hello, " + line

main! on line => print!(message)

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