Is there something like __newindex that also fires when index is not nil?

[Zulyrus]

local tab = setmetatable({}, {
__newindex = function(tbl, key, value)
rawset(tbl,key,value)
print("value changed!")
end)

tab["hi"] = 1
tab["hi"] = 5

^^ how to make this print twice

[un1ND3X (ice)]

There is not, though you can use a proxy table for that.

Read

Trouble with index & newindex

Ah I see what you’re doing! Well this concept is actually a thing used very often in lua, it’s called a proxy table, the PIL does a great job explaining it. Here is a link. If you find yourself not understanding something about it I’m happy to answer

and the next post

@XxELECTROFUSIONxX

To get __newindex to trigger for existing values you’ll need a proxy table as starmaq already said.

Alternatively you could create an identical table and set __newindex to check whether a certain index has the same value as the one being set to the index and then fire the bindable passing the index and value (if what you want is the __newindex firing for existing values apparently ).