Control.Reference.Predefined
simple
simple'
emptyRef
emptyRef'
traverse
traverse'
lens
lens'
partial
partial'
polyPartial
polyPartial'
fromLens
fromTraversal
filtered
filteredTrav
filteredPartial
iso
iso'
just
just'
right
right'
left
left'
anyway
anyway'
both
both'
_head
_head'
_tail
_tail'
class Association e
mvar
mvarNow
ioref
state