如何快速初始化Lua中的关联表？

local assocTable = {
  key1 = "value1",
  key2 = "value2",
  key3 = "value3"
}

local assocTable = {}
assocTable["key1"] = "value1"
assocTable["key2"] = "value2"
assocTable["key3"] = "value3"

for key, value in pairs(assocTable) do
  print(key, value)
end

for key, value in ipairs(assocTable) do
  print(key, value)
end

table.insert(assocTable, "key4", "value4")

table.remove(assocTable, "key4")

table.sort(assocTable)

local str = table.concat(assocTable, ", ")

local key, value = table.unpack(assocTable)

local packedTable = table.pack(assocTable)