Let Arithmetic

Ion supports applying some basic arithmetic, one operation at a time, to string variables. To specify to let to perform some arithmetic, designate the operation immediately before =. Operators currently supported are:

• Add (+)
• Subtract (-)
• Multiply (*)
• Divide (/)
• Integer Divide (//)
• Modulus (%)
• Powers (**)

Individual Assignments

The following examples are a demonstration of applying a mathematical operation to an individual variable -- first assigning 0 to the variable, then applying arithmetic operations to it.

let value = 0
let value += 5
let value -= 2
let value *= 3
let value //= 2
let value **= 10
let value /= 2

Multiple Assignments

It's also possible to perform a mathematical operation to multiple variables. Each variable will be designated with a paired value.

let a b = 5 5
let a b += 3 2
let a b -= 1 1
echo $a $b

This will output the following:

7 6