Keyed Lookup

Tables can also store named fields.

keyed_lookup.lua

local key = 
local value = ({name = "Ada", city = "London", role = "admin"})[key]

print("key=" .. key)
print("value=" .. value)

local key = 
local value = ({name = "Ada", city = "London", role = "admin"})[key]

print("key=" .. key)
print("value=" .. value)

local key = 
local value = ({name = "Ada", city = "London", role = "admin"})[key]

print("key=" .. key)
print("value=" .. value)

named fields Use a string key when the field name is selected at runtime.