Freek Van der Herten has a new post to his site sharing some of his ideas around making overloaded functions more readable, functions that can take in variable types of parameters (ex: both a string or an array) and can handle them correctly.
Sometimes you might allow a function to accept multiple data types. I don’t know for certain if it’s the correct term but for the remainder of this post I’m going to call such a function overloaded. In this post I’d like to show you a little trick to make overloaded functions more readable.
He starts off with an illustration from the Laravel framework of a "session" helper method that, in turn, calls "put" and checks for an array versus string input with some interesting logic behind it. He gives another example from a recent pull request where the code could be simplified using the same method as the "put" example, making it much more readable in the end. The post ends with one more example from this package and how the "respond" method was refactored with the same process, simplifying it down to a more readable and less-nested version.