Repointing Nodes¶

It is possible to repoint existing nodes to a new node. This can be useful when it is desired to make a small change in one node, without having to recreate all descendant nodes. As an example:

>>> from loman import *
>>> comp = Computation()
>>> comp.add_node("a", value=2)
>>> comp.add_node("b", lambda a: a + 1)
>>> comp.add_node("c", lambda a: 10 * a)
>>> comp.compute_all()
>>> comp.v.b
3
>>> comp.v.c
20
>>> comp.add_node("modified_a", lambda a: a * a)
>>> comp.compute_all()
>>> comp.v.a
2
>>> comp.v.modified_a
4
>>> comp.v.b
3
>>> comp.v.c
20
>>> comp.repoint("a", "modified_a")
>>> comp.compute_all()
>>> comp.v.b
5
>>> comp.v.c
40