#$ Can update records in a function.
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CoolVec
	x I32
	y I32
	z I32

fn pvec (p CoolVec) -> Unit
	println(p.x)
	println(p.y)
	println(p.z)


vec = CoolVec { x: 1, y: 2, z: 3 }
pvec(vec)

fn zero-z (v) -> CoolVec
	return v { z: 0 }

pvec(zero-z(vec))