Primitive Recursive Functions for a Working Programmer

1. rcl

   1 22 268 9.3 Rust

   A reasonable configuration language

   

   [3]: https://rcl-lang.org/

2. InfluxDB

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   InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.

   

3. dhall-lang

   2 124 4,334 6.0 Dhall

   Maintainable configuration files

   

   Anyway, it is not a problem in practice that this kind of pathological function can be expressed, I just put a limit on the number of execution steps (a “gas limit”, or what the author calls “metered execution”). For keeping code simple, I think the fact that the built-in looping constructs are bounded, and recursion is awkward, are a good nudge, but in the end the most valuable tool is code review and applying good judgment.

       [1]: https://dhall-lang.org/

4. cue

   3 125 5,509 9.9 Go

   The home of the CUE language! Validate and define text-based and dynamic configuration

   

   [2]: https://cuelang.org/

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