Programming Ruby 3.3

Struct

Sometimes you want to create a small object to hold data that has little to no behavior of its own, and a Ruby class seems like too much structure to bother with.

Ruby has a few lightweight ways to create classes that have little to no behavior.

The most commonly used is probably Struct. You can use Struct to create instance-like objects that have attributes and can respond to messages that you define.

Using Struct creates a class that you then create instances of. Let’s say you want to represent a classroom that has a name and a capacity. You use Struct.new to create a Classroom class, with the desired attribute names as arguments. You can then use Classroom.new to create new classrooms. The positional arguments in new match the order ...