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Use SubnetID for sync committee #4076

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Jan 8, 2025
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Use SubnetID for sync committee #4076

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4 changes: 2 additions & 2 deletions specs/altair/validator.md
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Original file line number Diff line number Diff line change
Expand Up @@ -295,7 +295,7 @@ The `subnet_id` is derived from the position in the sync committee such that the
*Note*: This function returns multiple deduplicated subnets if a given validator index is included multiple times in a given sync committee across multiple subcommittees.

```python
def compute_subnets_for_sync_committee(state: BeaconState, validator_index: ValidatorIndex) -> Set[uint64]:
def compute_subnets_for_sync_committee(state: BeaconState, validator_index: ValidatorIndex) -> Set[SubnetID]:
next_slot_epoch = compute_epoch_at_slot(Slot(state.slot + 1))
if compute_sync_committee_period(get_current_epoch(state)) == compute_sync_committee_period(next_slot_epoch):
sync_committee = state.current_sync_committee
Expand All @@ -305,7 +305,7 @@ def compute_subnets_for_sync_committee(state: BeaconState, validator_index: Vali
target_pubkey = state.validators[validator_index].pubkey
sync_committee_indices = [index for index, pubkey in enumerate(sync_committee.pubkeys) if pubkey == target_pubkey]
return set([
uint64(index // (SYNC_COMMITTEE_SIZE // SYNC_COMMITTEE_SUBNET_COUNT))
SubnetID(index // (SYNC_COMMITTEE_SIZE // SYNC_COMMITTEE_SUBNET_COUNT))
for index in sync_committee_indices
])
```
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