Booleans are a data type in Elixir used to represent truthiness and falsiness. They come in two flavors: true and false.

Interestingly, in Elixir, booleans are represented as atoms under the hood. Specifically, true and false are equivalent to the atoms :true and :false, respectively. This means you can use :true and :false as if they were true and false. But please don’t. It’s generally better to use true and false when dealing with booleans, as it makes the code clearer and easier to understand.