You can also use let rec ... and form: let rec f x = if x>0 then g (x-1) else x and g x = if x>0 then f (x-1) else x.
Beat me to it by 42 seconds... :-) – Jon Harrop Sep 1 '10 at 18:56 +1, Nice, didn't realize you could use and with let bindings. I thought it's usage was restricted to type declarations. – JaredPar Sep 1 '10 at 19:02 It's specially useful (necessary) if you have mutually recursive types (like two DUs) and two functions that take each as an input argument.
– Stringer Sep 1 '10 at 19:11.
To get mutually recursive functions simply pass one to the other as a parameter let rec f g x = if x>0 then g (x-1) else x let rec g x = if x>0 then f g (x-1) else x.
Use the let rec ... and ... construct: let rec f x = if x>0 then g (x-1) else x and g x = if x>0 then f (x-1) else x.
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