How can I create an operator to implement error chaining?

Question

I want to implement the following operator »:

throwingFunction(arg: T?)».doStuff()

/*  if throwingFunction throws an error:
     print or log the er         


        

Answer 1

prefix and postfix are unary operators i.e. they only accept one operand, whereas an infix operator is a binary operator i.e. it accepts two operands.

So, static func »(value:key:) -> Preferred? is not correct because it's taking two operands whereas you have defined » as a postfix operator.