<div dir="ltr"><div><div>You can write (f . g) x as f . g $ x so for me, it's avoiding extra parenthesis. <br></div><br></div>Mukesh<br><div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Feb 13, 2013 at 2:53 AM, Emanuel Koczwara <span dir="ltr"><<a href="mailto:poczta@emanuelkoczwara.pl" target="_blank">poczta@emanuelkoczwara.pl</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
Dnia 2013-02-12, wto o godzinie 22:09 +0100, Martin Drautzburg pisze:<br>
> On Friday, 1. February 2013 23:02:39 Ertugrul Söylemez wrote:<br>
><br>
> > (f . g) x = f (g x)<br>
><br>
><br>
> so (f . g) x = f $ g x<br>
><br>
> right?<br>
><br>
> That looks like the two are pretty interchangeable. When would I prefer one<br>
> over the other?<br>
><br>
><br>
<br>
($) has lower precedence (it was introduced for that reason I belive).<br>
<br>
Prelude> :info ($)<br>
($) :: (a -> b) -> a -> b -- Defined in GHC.Base<br>
infixr 0 $<br>
<br>
Please take a look at:<br>
<a href="http://www.haskell.org/ghc/docs/latest/html/libraries/base-4.6.0.1/Prelude.html#v:-36-" target="_blank">http://www.haskell.org/ghc/docs/latest/html/libraries/base-4.6.0.1/Prelude.html#v:-36-</a><br>
<br>