TYP350

TYP350 — lambda needs an expected function type

Subsystem	Type checking
Severity	error

A lambda (|x| …) appears where no fn type is expected (e.g. an unannotated let). Annotate the binding (let f: fn(i64) -> i64 = |x| …) or pass it where a function is expected; v0 has no standalone inference of lambda parameter types. See spec/closures.md.

From your terminal:

q64 explain TYP350