This is might not be such a good question, since I don't know of any compiled language that supports this feature, but since Go is constantly surprising me, I'll ask it anyway:
For my own practice, I am writing a little calculator program in Go. I'm wondering if there is a way I can declare and assign a variable of type "Operator", such that I could, for example, write:
var o Operator
o = +
var o1 Operator
o1 = /
and write function like this
func DoOperation(a,b int,o Operator) int{
return a o b
}
(No, I am not asking about operator overloading.)
Offhand, I don't know of any compiled language that supports such a thing (I'm not an expert in this). I did look at the docs under operators and found nothing. Can Go surprise me again?
Edit: The accepted answer states that Haskell supports this,
No, Go operators are not functions and hence no valid right-hand expressions. They work in a generic way e.g. the plus-operator works on all numeric types and infix-notation a la haskell is not supported either.
You would have to write your own "soft"-generic addition function using reflection.
One compiled language that covers all of your requirements is Haskell.
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