Comments

Common programming wisdom says the following:

"Code is read much more often than it is written, so plan accordingly."

Code comments are a powerful tool that make the programs easier to understand later on. In Julia, comments are marked with the # sign. Single-line comments are denoted by a # and everything that follows this, until the end of the line, is ignored by the compiler. Multiline comments are enclosed between #= ... =#. Everything within the opening and the closing comment tags is also ignored by the compiler. Here is an example:

julia> #= 
           Our company charges a fixed  
           $10 fee per transaction. 
       =# 
const flatfee = 10 # flat fee, per transaction 

In the previous snippet, we can see both multiline and single-line comments in action. A single-line comment can also be placed at the beginning of the line.