Data.Tree.Zipper
data TreePos t a
class PosType t
data Empty a
data Full a
before
after
forest
tree
label
parents
fromTree
fromForest
toForest
toTree
parent
root
prevSpace
prevTree
prev
first
spaceAt
nextSpace
nextTree
next
last
children
firstChild
lastChild
childAt
isRoot
isFirst
isLast
isLeaf
isContained
hasChildren
insert
delete
setTree
modifyTree
modifyLabel
setLabel