Hands-On Design Patterns and Best Practices with Julia

Type II piracy – Extending without your own types

Type II piracy is commonly known as type piracy by the Julia developer community. It refers to the situation where a third-party function is extended without using the programmer's own types in any of the function arguments. It usually happens when you want to extend the third-party package by injecting your own code. Let's go through a hypothetical example.

Suppose that you want to mimic the same behavior in JavaScript of adding a string and a number together, where the values concatenate as if they are both strings:

To make it happen in Julia, we would be tempted to do the following in