Example
The Lua standard library provides two iterator functions that can be used with a for loop to traverse key-value pairs within tables.
To iterate over a sequence table we can use the library function ipairs.
for index, value in ipairs {'a', 'b', 'c', 'd', 'e'} do
print(index, value) --> 1 a, 2 b, 3 c, 4 d, 5 e
end
To iterator over all keys and values in any table we can use the library function pairs.
for key, value in pairs {a=1, b=2, c=3, d=4, e=5} do
print(key, value) --> e 5, c 3, a 1, b 2, d 4 (order not specified)
end
