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by legobmw99 189 days ago
There are some interesting experiments going on in the OCaml world that involve what they call 'modes', essentially a second type system for how a value is used separate from what it is. One goal of modes is to solve this problem. It ends up looking a bit like opting-in to a Rust-style borrow-checker for the relevant functions

https://oxcaml.org/documentation/modes/intro/