# Read Before Declare

> A defect in which a run reads the set of live runs before writing its own entry, so two starters each see an empty set.

Record: `lexicon:read-before-declare`
Kind: anti-pattern
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-read-before-declare

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Digest-Named Channel](https://banes-lab.com/records/lexicon/digest-named-channel.md) and before [Blanket Collapse](https://banes-lab.com/records/lexicon/blanket-collapse.md).

## Category

- [Coordination Surfaces](https://banes-lab.com/records/lexicon-category/coordination-surfaces.md)

## Violates

- [Declare-Before-Read Order](https://banes-lab.com/records/architecture/declare-before-read-order.md)

## Linked from

- [Coordination Surfaces](https://banes-lab.com/ontology/principles/architecture-category-coordination-surfaces.md)