Hands-On Design Patterns and Best Practices with Julia

Defining functions

There are actually two different syntaxes that we can use to define a function:

• The first way is a simple one-liner that contains both the signature and body of the function.
• The second way uses the function keyword with the signature, followed by the code block and the end keyword.

If the function is simple enough—for example, if it just has a single instruction—then it is usually more preferable to write the function in a single line. This style of function definition is very common for scientific computing projects, as many functions simply mimic the corresponding mathematical formulae.

For our game, we can just write four functions for moving the game pieces around the board by modifying the coordinates of the widget: ...