Constants are available since Lua 5.4:
local a <const> = 42
a = 100500
Produces an error:
lua: tmp.lua:2: attempt to assign to const variable 'a'
Constants are available since Lua 5.4:
local a <const> = 42
a = 100500
Produces an error:
lua: tmp.lua:2: attempt to assign to const variable 'a'