2013/5/28 Tikhon Jelvis <tikhon@jelv.is>:

> These are present in Control.Arrow as (***), first and second respectively.

Right, thanks. Strange that neither Hayoo nor Hoogle turned these up..

HLint suggested Control.Arrow.&&& and Control.Arrow.first to me the other day:

$ hlint Checker.hs

Checker.hs:65:5: Warning: Reduce duplication

Found:

topdir <- ask

md5file <- computeChecksumFilename f

hasChecksum <- liftM not $ isChecksumMissing f

Why not:

Combine with Checker.hs:81:5

Checker.hs:127:96: Warning: Use &&&

Found:

\ x -> (s3Path x, s3Md5sum x)

Why not:

s3Path Control.Arrow.&&& s3Md5sum

Checker.hs:153:42: Warning: Use first

Found:

\ (x, y) -> (trimPathPrefix path x, y)

Why not:

Control.Arrow.first (trimPathPrefix path)

3 suggestions

Some people that I know have HLint incorporated into their vim sessions, I think using Syntastic.

Cheers,