Conditional and repeated evaluation

Conditional evaluation helps break the code into smaller chunks, with each chunk being evaluated based on a certain condition. There are many ways in which such conditions can be imposed and the code can be handled accordingly.

We will be walking you through various methods of conditional code evaluation. But before we go further, we need to familiarize ourselves with compound expressions.

Compound expressions are ways in which we can make sure that a sequence of code gets evaluated in an orderly fashion. Let's have a look at some code:

julia> volume = begin
           len = 10
           breadth = 20
           height = 30
           len * breadth * height
       end
6000

julia> volume
6000

Here, we have a simple logic implemented in the form of a compound expression. As you can see, the volume is being calculated as the product...