Tables - some basics - Lua example

Tables and the table library. example from a Well House Consultants training course
More on Tables and the table library. [link]

This example is described in the following article(s):
• Lua Tables - [link]

Source code: tabo Module: U105

--[[
Lua uses its tables as its single collection type.
This example shows some of the basics
]]

print ("Tables start at position number ONE by default")
-- The # operator give the length of a table
occupants = {"Jones","Smith","Patel","Brown","Ng"}
for k=1,#occupants do
        print ("Room " .. k .. " the " .. occupants[k] .. " family")
end

print ("\nTables can contain mixed variables")
print ("Tables can be expanded later")
occupants = {"Jones",14,nil,12.5,"Ng"}
occupants[6] = "Hedgehog"
for k=1,#occupants do
        -- Note lazy "or" operator
        print ("Now " .. k .. " the " .. (occupants[k] or 66) .. " family")
end

print ("\nTables of tables")
ages = {{25,27},{40},{35,42},{44,50},{19,35}}
for k=1,#ages do
for j=1,#ages[k] do
        print (k .. "/" .. j .. " - " .. ages[k][j])
end
end

--[[ ------------ sample output ----------------
[trainee@easterton u105]$ lua tabo
Tables start at position number ONE by default
Room 1 the Jones family
Room 2 the Smith family
Room 3 the Patel family
Room 4 the Brown family
Room 5 the Ng family

Tables can contain mixed variables
Tables can be expanded later
Now 1 the Jones family
Now 2 the 14 family
Now 3 the 66 family
Now 4 the 12.5 family
Now 5 the Ng family
Now 6 the Hedgehog family

Tables of tables
1/1 - 25
1/2 - 27
2/1 - 40
3/1 - 35
3/2 - 42
4/1 - 44
4/2 - 50
5/1 - 19
5/2 - 35
[trainee@easterton u105]$

]]

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