Show HN: A small programming language where everything is pass-by-value
jcparkyn Sunday, January 25, 2026
This is a hobby project of mine that I started a few years ago to learn about programming language implementation. It was created 95% without AI, although a few recent commits include code from Gemini CLI.
I started out following Crafting Interpreters, but gradually branched off that until I had almost nothing left in common.
Tech stack: Rust, Cranelift (JIT compilation), LALRPOP (parser).
Original title: "A small programming language where everything is a value" (edited based on comments)
Summary
The GitHub repository 'Jcparkyn/herd' contains an open-source project focused on herd immunity modeling, exploring the dynamics of disease spread and the impact of interventions on community health.
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Summary
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