divide_by_zero

This lint rule checks for instances of divison, floor division, or taking the remainder with respect to the literal value 0.

Why this is discouraged

Division and floor division by 0 will generally give inf or -inf (unless the dividend is 0). The direct use of math.huge or -math.huge instead is encouraged. Taking remainder with respect to 0 (i.e. 3 % 0) will give NaN. We instead encourage the use of 0 / 0 until such time as a NaN constant is added to math.

Example violations

divide_by_zero will warn on the following:

local x = 3 / 0
local y = -4 // 0
local z = 24 % 0

You should instead do:

local x = math.huge
local y = -math.huge
local z = 0 / 0