pass.if_changed¶
Execute a nested pipeline body when the immediately preceding sibling statement changed the current anchor.
Operation contract¶
| Property | Value |
|---|---|
| Semantic phase | — |
| Traits | UnknownEffects, ImplicitTerminator(pass.yield) |
Signature¶
| Kind | Name | Type | Cardinality | Description |
|---|---|---|---|---|
| Region | body |
region | required | Body executed when the preceding sibling reported a mutation. (terminator pass.yield.) |