Callables in Ruby

In Ruby there are several objects that respond to call. I usually refer to them as callables:

• Proc
• Lambda
• Method

There are various ways that you can invoke those callables:

• .call()
• []
• .()
• .===

I’ve talked about the case equality operator === over here. But what about the other ones? IMHO you should stick to .call() because it does not require knowledge about a special syntax.