Hole
matryoshka
head
StreamOps
headOption
RecListFOps ListF
height
matryoshka
histo
Recursive Ops
hmap
CoEnv EnvT
holes
matryoshka
holesList
matryoshka
htraverse
CoEnv EnvT
hylo
matryoshka IdOps
hyloM
matryoshka IdOps