Class LFork

Object
   |
   +--Lens
         |
         +--LFork

class LFork

extends Lens

A simplified LXfork. The concrete tree is split based on a predicate over properties; the object composed of passing properties is passed to pass_lens, and whatever remains is passed to fail_lens. On putback, the same predicate is used on both the abstract and the concrete trees.
Defined in lens.js

Field Detail

name

Object name

LFork

LFork(<function> pred, <Lens> pass_lens, <Lens> fail_lens)

Parameters:
pred - The predicate on properties
pass_lens - The lens through which the object composed of passing properties will be passed
fail_lens - The lens through which the failing-property object will be passed