Error Lab

Every diagnostic below is the real output of ptc, not a mock-up. Pick a mistake, read how the compiler teaches the canonical form, then flip to the fix.

enum Status:
    Active
let s = Status.Active()

error: 'Status.Active' is a unit variant — write it without parentheses: Status.Active (line 3, column 9)

enum Status:
    Active
let s = Status.Active
print("{s}")

Status.Active