Here's how you can write a simpler (one-parameter) Y-combinator in Scala 3. The methods `y` and `recurse` would be defined in a library, then you would just call `recurse` when you want to recurse.pic.twitter.com/DLqYoO6QmU
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My scala 2 brain make an implicit Rec[Int] not found. How it’s works?
The fact it's part of the correct function means we don't have to write it at the call site, but the `using` in the definition explicitly applies it to the implicit function.