How can I merge two tables like this? - Lua

Question

I have these tables set like this

local tableone = {["Gold"] = 10, ["Gem"] = 5}
local tabletwo = {["Level"] = 1}

This is the code for merging

local test = {tableone, tabletwo}
print(test)

But if I try to merge the tables then the output is like this

[1] = {
   ["Gold"] = 10, 
   ["Gem"] = 5
},
[2] =  {
   ["Level"] = 1
}

And I would like to have the output like this

[1] = {
   ["Gold"] = 10, 
   ["Gem"] = 5,
   ["Level"] = 1
}

Is this possible? Sorry if I'm not that good at explaining.

Answer 1

You can do this with a simple nested loop.

local function merge(...)
  local result <const> = {}
  -- For each source table
  for _, t in ipairs{...} do
    -- For each pair in t
    for k, v in pairs(t) do
      result[k] = v
    end
  end
  return result
end

local t <const> = {merge(tableone, tabletwo)}

I put the result in a table constructor due to the [1] in the question.