Class LRenameIfPresent

Object
   |
   +--Lens
         |
         +--LRenameIfPresent

class LRenameIfPresent

extends Lens

Renames a property in the concrete tree to a different property in the abstract tree -- but only if the property is present. This is a sample use of LAcond. Note that LCcond is insufficient to define this lens, since the rename lens should be used for putback only if the new, renamed field is present in the abstract tree -- LCcond can only look at the concrete tree.
Defined in lens.js

Field Detail

name

Object name

LRenameIfPresent

LRenameIfPresent(<String> from, <String> to)

Parameters:
from - The source property in the concrete tree
to - The target property in the abstract tree