[erlang-questions] difference between ", " and "andalso" in guards

[Steve Davis]

I can't imagine an output difference. Shouldn't "," =:= "andalso" and ";" 
=:= "orelse".

The difference appears to be a performance optimization - where would the 
"orelse shortcut" be incorrect?

(Could be I'm underthinking this)...

On Saturday, May 17, 2014 11:20:08 PM UTC-5, Adel Zhang wrote:
>
> hi, I am currently reading "learnyousomeerlang". In "Syntax in Functions" 
>   
> chapter "guards" section, Fred said 
>
>
>
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