13 Oct
2010
13 Oct
'10
3:50 a.m.
David Virebayre wrote:
Gregory Crosswhite wrote:
Also, I don't see why one would prefer >>> over the standard function composition operator, ".".
With "." you have to read right-to-left to follow data's path.
For me that reading order isn't natural, and I imagine it is so for most people which don't have a mathematical background.
Combined with >>= / >> you have multiple reading direction in the same expression, as in
expression ( c . b . a ) `liftM` a1 >>= a2 >>= a3 reading order 6 5 4 1 2 3
So that could be one reason.
That's why I'm usually using =<< instead of >>= . Regards, Heinrich Apfelmus -- http://apfelmus.nfshost.com