22 May
2009
22 May
'09
8:23 p.m.
Henning Thielemann wrote:
On Fri, 22 May 2009, Andrew Coppin wrote:
My first problem was quite simple. I want to write a program that reads an item from the input file, processes it, writes it to the output file, and repeats until the input file is empty. Data.Binary doesn't appear to provide any obvious way to do this. You can't be in the Get and Put monads simultaneously, and I can't figure out how to interleave them.
You can! - It's again time to point out that Put shouldn't be a monad, but a monoid. But as it is, Put is a Writer monad on top of the Builder monoid. Better use that Builder monoid directly.
Aaaahhhahaha.... Nice. Thanks for the tip. :-D