Vector.sub

local a = createVector(3, 5);
local b = createVector(2, 3);

-- Non-mutable
print(Vector.sub(a, b)); -- { 1.0, 2.0 }
print(a - b);            -- { 1.0, 2.0 }
print(a);                -- { 3.0, 5.0 }

-- Mutable
print(a:sub(b)); -- { 1.0, 2.0 }
print(a);        -- { 1.0, 2.0 }