How to remove an element from a table?

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#1

How to remove an element from a Lua table (not array, which for some reason some people also call it a table…). Setting value to nil should work, but then why:

local a = {}
a["a"] = 1
a["a"] = nil -- Type Error: Type 'nil' could not be converted into 'number'

This happens for both old type solver and a new one.

rawset(a, "a", nil)

This works, but doesn’t seem like an intended way of doing it.

#2

are you using strict mode?

that is the intended way to do it you are right

if you are using strict mode you can do that to remove the error

--!strict
local a :{ [string] : number?} = {}
a["a"] = 1
a["a"] = nil -- Type Error: Type 'nil' could not be converted into 'number'

number? means that it can be either number or nil

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