On Thu, Nov 17, 2005 at 06:56:09PM +0100, Sebastian Sylvan wrote:
Personally I think that the dot is way to good of a symbol to be "wasted" on function composition.
I mean, how often do you really use function composition in a way which doesn't obfuscate your code?
I just checked in two recent projects, and it's about one (.) in 100 lines of code. I wanted to disagree with you, but in the end I could accept pressing more keys when I wanted function composition, especially if I got something in return. BTW, I think there was some tool to calculate various metrics on Haskell code. It would be interesting to make some graphs showing how often you use various features of Haskell, how it changed with time.
I use ($) way more often than (.).
Me too, measurement shows it's about four times more often. However, I like my uses of (.) much more than uses of ($). I often turn $'s into parentheses, because I feel it looks better this way. Of course, there are cases where $ is indispensable.
Some people do use it more often than I do, but I find that in most cases except simple "pipelined" functions it only makes the code harder to read.
But this case is quite important, isn't it? Best regards Tomasz