Lack of types is one thing that turned me away from Elixir when I was trying to learn it. I didn't know how to think about the types so I wanted some way to an

Lack of types is one thing that turned me away from Elixir when I was trying to learn it. I didn't know how to think about the types so I wanted some way to annotate them to help think through it, but went through it. And then the compiler complained at me I was passing in the wrong type to a function. I mean yes thanks? But also give me a way to figure that out BEFORE I try running the code.