Values in Lua

Lua has various value types including strings, numbers, booleans, etc. Here are a few basic examples.

-- Strings, which can be concatenated with ..
print("lua" .. "lang")

-- Numbers (Lua doesn't distinguish between integers and floats)
print("1+1 =", 1 + 1)
print("7.0/3.0 =", 7.0 / 3.0)

-- Booleans, with boolean operators as you'd expect
print(true and false)
print(true or false)
print(not true)

To run the program, save it as values.lua and use the lua command:

$ lua values.lua
lualang
1+1 =   2
7.0/3.0 =       2.3333333333333
false
true
false

In this example, we see:

1. String concatenation using the .. operator.
2. Basic arithmetic operations on numbers.
3. Boolean operations using and, or, and not.

Note that Lua uses .. for string concatenation instead of +, and keywords like and, or, and not for boolean operations instead of symbols.

Also, Lua doesn’t have a separate print function for each value; instead, multiple arguments to print are separated by tabs in the output.