[Haskell-beginners] [Haskell-cafe] oddsFrom3 function

[Daniel Trstenjak]

Hi Debdut,

On Mon, Aug 17, 2015 at 04:44:55AM -0400, Debdut Karmakar wrote:
> I am a haskell beginner and wondering how the following function works (in
> procedure) :
> 
> 
> oddsFrom3 :: [Integer]
> oddsFrom3 = 3 : map (+2) oddsFrom3
> 
> 
> Thanks for your help.

Try to expand a few steps of the recursion by hand e.g.:

   3 : (map (+2) (3 : map (+2) (3 : map (+2) ...)))


As you can see, the deeper you go more 'map (+2)' are applied to '3'.


Greetings,
Daniel