Re: [Haskell-cafe] How to devide matrix into small blocks

What about blocks w h = concatMap transpose . map (map (chop w)) . chop h ? @L. Guo: map concat . blocks w h is what you want. Cheers, Daniel Am Donnerstag, 14. Juni 2007 09:42 schrieb Janis Voigtlaender:

Anyway, as a challenge to others on the list: write a one-liner that splits an "image" like ["abcd","efgh","ijkl","mnop"], interpreted as

abcd efgh ijkl mnop

into the list of images:

[ ab ef , cd gh , ij mn , kl op ]

for (w,h)=(2,2), into:

[ a e , b f , c g , d h , i m , j n , k o , l p ]

for (w,h)=(1,2), and so on.

(Where an image like

ab ef

is represented as ["ab","ef"].)

Have fun, Janis.