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A float walks into a gradual type system
In this post I explore the design space of adding floats to RCL, a gradually typed configuration language. With floats in place, RCL is finally a true json superset.
While RCL supported integers early on, it was missing one piece to deliver on the json superset promise: floats — numbers that contain a decimal point. Because RCL aims to generate configuration for any application that accepts json, yaml, or toml, it can’t assume that the presence or absence of a decimal point is irrelevant. It’s not a research language intended to explore the cutting edge of configuration systems, it’s a practical tool that people who haven’t seen it before should be able to pick up quickly.
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