Strange, when I run the code on Demo - Luau, I get the tables as results:
local function proxify(tbl: {any})
local proxy = newproxy(true)
local meta = getmetatable(proxy)
meta.__index = function(self, key)
local idx = tbl[key]
if idx and type(idx) == "table" then
idx = proxify(idx)
end
return idx
end
meta.__newindex = function(self, key, newValue)
if tbl[key] ~= newValue then
tbl[key] = newValue
end
end
meta.__iter = function()
return next, tbl
end
return proxy
end
local tbl = proxify({
Timer = 0,
Name = "",
Modes = {
Easy = {},
Normal = {},
Hard = {},
Insane = {}
}
})
for key, value in tbl.Modes do
print(key, value)
end
My fault! I had put the wrong table into the __iter function. But now I am facing the issue when attempting to use table.insert function on the tbl.
It looks like the tbl is returning userdata which table function can’t handle, how would I go about fixing this issue? I suppose it has to do with __index?
A temporary workaround I did was creating another table inside the proxify function and detecting when a key from that table is being indexed inside tbl and returning the value associated with the key:
local function proxify(tbl: {any})
local proxy = newproxy(true)
local meta = getmetatable(proxy)
local internalMethods = {
insert = function(key, value)
table.insert(tbl, (key or (#tbl + 1)), value)
end
}
meta.__index = function(self, key)
local idx = tbl[key] or internalMethods[key]
if idx and type(idx) == "table" then
idx = proxify(idx)
end
return idx
end
meta.__newindex = function(self, key, newValue)
if tbl[key] ~= newValue then
tbl[key] = newValue
end
end
meta.__iter = function()
return next, tbl
end
return proxy
end
local tbl = proxify({
Timer = 0,
Name = "",
Modes = {
Easy = {},
Normal = {},
Hard = {},
Insane = {}
}
})
tbl.insert(nil, "test")
print(tbl[1]) --> Should print "test"
for key, value in tbl.Modes do
print(key, value)
end
There’s probably a much more cleaner way of going about this
Another thing is that in the proxy you can see another 2 functions:
pmappend. Will append the main table and push the last main table:
local Proxy = require(script.Parent.Proxy)(getfenv());
--By sending the enviroment we have updated all the proxies
local myProxy = Proxy.new(CFrame.new());
print(-myProxy); --Prints the CFrame
Proxy.pmappend(myProxy, Color3.new());
print(-myProxy); --Prints the Color
pappend. This appends new tables. So you can do:
local Proxy = require(script.Parent.Proxy)(getfenv());
--By sending the enviroment we have updated all the proxies
local myProxy = Proxy.new();
Proxy.pappend(myProxy, Color3.new());
print(myProxy.R); --Prints since we appended Color3
Sorry, I don’t I’m fully understanding, can you elaborate? Are you asking is there a way to dynamically connect the functions for the table global, to the proxy table? If so, I believe there is
That’s awesome but I personally would not use these kind of methods in production as it’s a hacky solution. I will probably go with adding .insert function as @HugeCoolboy2007 suggested, although I am probably gonna look for different solution to it as well because I want to avoid name collisions (eg. local tbl = proxify({ insert = "cool" }) ).
I could make a module like ptable(proxy table) to avoid overwriting global built-in functions.
local ptable = {}
function ptable.insert(tbl, value, index)
getmetatable(tbl).__newindex(tbl, index, value, true)
end
return ptable
Also, could you explain what is going on with the .__newindex(...), what is that true for?
Fixed so that you don’t need to use getfenv New example.rbxm (6.4 KB)
You just need to paste this when requiring
local Proxy = require(script.Parent.Proxy);
local getmetatable = Proxy.getmetatable;
local setmetatable = Proxy.setmetatable;
local ipairs = Proxy.ipairs;
local pairs = Proxy.pairs;
local rawget = Proxy.rawget;
local rawset = Proxy.rawset;
I believe I solved the issue with name collision, I changed the __index meta method to this:
meta.__index = function(self, key)
local idx = tbl[key] or internalMethods[key]
local tableMethod = table[key]
if idx and type(idx) == "table" then
idx = proxify(idx)
end
return idx or (tableMethod and function(...)
return tableMethod(tbl, ...)
end) or nil
end
If the key exists on the table first, then the key value from the will be returned, otherwise it will search the internalMethods table and do the same thing. If it doesn’t exist in either of the tables, then it will search the table global for the key and return a function that runs the built-in function from the global.
Code used:
Summary
For some, reason I can’t copy all of the code on mobile
tbl.insert("test") -- removed the "nil" argument
print(tbl[1])
for key, value in tbl.Modes do
print(key, value)
end
That is a complicated one. What you will need to do is a custom print that loops through the table and creates a copy of a real table to print it. Any other method requires too much work, and it is just better to allow roblox to display the table.
