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update shard doc, use new types, avoid List

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protolambda 2019-06-19 00:55:01 +02:00
parent 8344d50ae5
commit 4b4bf87e47
1 changed files with 6 additions and 6 deletions
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12
specs/core/1_shard-data-chains.md
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@ -154,7 +154,7 @@ def get_switchover_epoch(state: BeaconState, epoch: Epoch, index: ValidatorIndex
```python
def get_persistent_committee(state: BeaconState,
shard: Shard,
slot: Slot) -> List[ValidatorIndex]:
slot: Slot) -> Tuple[ValidatorIndex, ...]:
"""
Return the persistent committee for the given ``shard`` at the given ``slot``.
"""
@ -175,10 +175,10 @@ def get_persistent_committee(state: BeaconState,
# Take not-yet-cycled-out validators from earlier committee and already-cycled-in validators from
# later committee; return a sorted list of the union of the two, deduplicated
return sorted(list(set(
return tuple(sorted(list(set(
[i for i in earlier_committee if epoch % PERSISTENT_COMMITTEE_PERIOD < get_switchover_epoch(state, epoch, i)] +
[i for i in later_committee if epoch % PERSISTENT_COMMITTEE_PERIOD >= get_switchover_epoch(state, epoch, i)]
)))
))))
```
### `get_shard_proposer_index`
@ -284,7 +284,7 @@ Let:
```python
def is_valid_shard_block(beacon_blocks: List[BeaconBlock],
beacon_state: BeaconState,
valid_shard_blocks: List[ShardBlock],
valid_shard_blocks: Iterable[ShardBlock],
candidate: ShardBlock) -> bool:
# Check if block is already determined valid
for _, block in enumerate(valid_shard_blocks):
@ -348,7 +348,7 @@ Let:
* `candidate` be a candidate `ShardAttestation` for which validity is to be determined by running `is_valid_shard_attestation`
```python
def is_valid_shard_attestation(valid_shard_blocks: List[ShardBlock],
def is_valid_shard_attestation(valid_shard_blocks: Iterable[ShardBlock],
beacon_state: BeaconState,
candidate: ShardAttestation) -> bool:
# Check shard block
@ -380,7 +380,7 @@ Let:
def is_valid_beacon_attestation(shard: Shard,
shard_blocks: List[ShardBlock],
beacon_state: BeaconState,
valid_attestations: List[Attestation],
valid_attestations: Set[Attestation],
candidate: Attestation) -> bool:
# Check if attestation is already determined valid
for _, attestation in enumerate(valid_attestations):