What is the use of non short-circuiting boolean operators in Erlang?

Question

I am learning Erlang from the LearnYouSomeErlang web-book. One thing that struck me while learning was the non short-circuiting boolean conjunction and disjunction operators viz; and and or. What are the use cases for these operators? Why would you want to use them instead of andalso and orelse?

Answer 1

It used to be (until R13A) that andalso and orelse weren't tail recursive. See http://www.erlang.org/eeps/eep-0017.html for details. I don't think there is a good reason to use and/or in new programs.

Answer 2

I see them as doing different things and use them as such:

• and/or as logical operators where I want to compare the logical values. As they are strict I automatically get type-checking and I KNOW exactly what has been called.
• andalso/orelse for control, much like && and || in C.

Seeing errors are defined in erlang I feel it is good to know what has been executed and how it went.