v1: Vec3{data: [1.000000, 3.000000, 2.000000]}
v2: [1.000000, 3.000000, 2.000000]
buff: [0.000000, 2.000000, 3.500000, 4.000000, 0.000000]
comp: Foo{value: 42, count: 1}
add: [4.000000, 5.000000, 3.000000]
v2.x: 1.000000
v2[1]: 3.000000
scaled: [2.000000, 6.000000, 4.000000]
neg: [-1.000000, -3.000000, -2.000000]
sqrt(9): 3.000000
.user(0.500000)
4
16
8