ref: f2365d327bed87e68d94b9b458cf27b70efc9f4b
dir: /test/matchstruct.myr/
use std type t = struct v1 : int v2 : int v3 : int ;; const main = { var v : t v.v1 = 2 v.v2 = 40 v.v3 = 10 match v | [.v1 = x, .v2 = y, .v3 = 10]: -> x + y | _: std.die("Wat") ;; -> 0 }