My apologies if this is not in SO's domain - it's a bit high-level/theoretical. I'm studying a custom Language Specification(called ACELandic if you interested). And it is based of of Extended Backus–Naur Form(EBNF ).
I see symbols like
<-
->
<=
=>
that are really confusing me. Are these standardized symbols? I recall stuff like this in Haskell, but I can't get my head around this.. I appreciate any tips or advice.
