Function CountByUUID

CountByUUID<T extends { ID: UUIDInput }>(items: Iterable<T>): UUIDMap<number>
How many items share each ID. Look a count up with .Get(id) ?? 0; any casing works.
Type Parameters
- T extends { ID: UUIDInput }
Parameters
- items: Iterable<T>
Returns UUIDMap<number>
Example
```
const perEntity = CountByUUID(relationships, r => r.RelatedEntityID);
const shared = (perEntity.Get(rel.RelatedEntityID) ?? 0) > 1;
```
- Defined in util/UUIDCollections.ts:184
CountByUUID<T>(items: Iterable<T>, getId: UUIDSelector<T>): UUIDMap<number>
How many items share each ID. Look a count up with .Get(id) ?? 0; any casing works.
Type Parameters
- T
Parameters
- items: Iterable<T>
- getId: UUIDSelector<T>
Returns UUIDMap<number>
Example
```
const perEntity = CountByUUID(relationships, r => r.RelatedEntityID);
const shared = (perEntity.Get(rel.RelatedEntityID) ?? 0) > 1;
```
- Defined in util/UUIDCollections.ts:185