[Haskell-beginners] type error in sub-function

[Brent Yorgey]

On Sat, Feb 15, 2014 at 05:11:39PM -0600, James Toll wrote:
> 
> On Feb 15, 2014, at 4:53 PM, Alexander Batischev <eual.jp at gmail.com> wrote:
> 
> > Something should have just clicked in your
> > brain, and every piece fell in place, but if not, read on.
> 
> Yes, the light bulb has gone on.  Thanks to you and Brent.  I really appreciate both of your explanations to my follow-up question.  It’s almost a bit difficult to keep up with responding while reading your excellent and very helpful responses.  I do think I now understand what was going on in this particular instance and why I was tricking myself.  It always seems so simple in hindsight.  I’m sure this won’t be the last time I get tripped up on this though.  But I’m hopeful I can better reason it out going forward.
> 
> Thanks again for all the extremely helpful responses.

Glad to be of help!  For what it's worth, the whole
numeric-types-and-type-classes thing is definitely one of the
trickiest corners of Haskell, at least when starting out.  I remember
spending a good deal of time struggling through it at first too.

-Brent