noop

Module nu.core.flows.noop.

Noop: the empty Flow - the identity of flow composition.

A childless Strategy that composes nothing. It yields nothing and mutates nothing, so it is the identity element of the flow monoid: Sequential(a, Noop(), b) runs exactly like Sequential(a, b). Use it as the placeholder for a work slot that must hold a Nu but where nothing should run - an else-less branch, a bodyless DelayedDo, an absent catch / finally_ / hook.

Being a Flow, it slot-fits wherever work fits: a Strategy child, a Control body, a Span body. It does not fit a value slot or a param slot - a no-op belongs where a mutator would go, never where a value is read. Owners still identity-check it (isinstance(child, Noop)) to read "this optional branch is absent" and skip it.

Noop

The empty Flow: composes nothing, the identity of flow composition.

Noop()

Path nu.core.flows.Noop. Kind Strategy, sort strategy, cardinality void.

Yields

Nothing (VOID).

Notes

• Slot-fits wherever work fits: a Strategy child, a Control body, a Span body. Rejected in a value slot or a param slot, since a no-op belongs where a mutator would go, never where a value is read.

Example

nu.run(nu.Noop())[0] is None

True