README.md

DDD sample

cargo

DDD sample with OO

counting shapes

DDD sample with FP

counting triangles

How many triangles can you see? 24, details as follows: [abc abd abe acd ace ade aef aeg aeh afg afh agh ahi ahj ahk aij aik ajk beh ceg def ehk fhj ghi]

counting quadrangles

How many quadrangles can you see? 18, details as follows: [aceh adeg adeh afhk aghj aghk bcgh bcih bdfh bdjh bekh cdfg cdji ceki dekj efjk egik fgij]