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Minor fix: markdown grammar and typing hints

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Hsiao-Wei Wang 2018-11-24 01:38:57 +08:00
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specs/core/0_beacon-chain.md
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@ -521,7 +521,8 @@ def get_beacon_proposer(state:BeaconState, slot: int) -> ValidatorRecord:
The following is a function that determines the validators that participated in an attestation: The following is a function that determines the validators that participated in an attestation:
```python ```python
def get_attestation_participants(state: State, attestation: AttestationRecord): def get_attestation_participants(state: State,
attestation: AttestationRecord) -> Tuple[List[int], List[int]]:
sncs_for_slot = get_shards_and_committees_for_slot(state, attestation.slot) sncs_for_slot = get_shards_and_committees_for_slot(state, attestation.slot)
snc = [x for x in sncs_for_slot if x.shard == attestation.shard][0] snc = [x for x in sncs_for_slot if x.shard == attestation.shard][0]
assert len(attestation.attester_bitfield) == ceil_div8(len(snc.committee) * 2) assert len(attestation.attester_bitfield) == ceil_div8(len(snc.committee) * 2)
@ -984,7 +985,7 @@ _Note: `last_state_recalculation_slot` will always be a multiple of `CYCLE_LENGT
* Let `active_validators = [state.validators[i] for i in get_active_validator_indices(state.validators)]` * Let `active_validators = [state.validators[i] for i in get_active_validator_indices(state.validators)]`
* Let `total_balance = sum([v.balance for v in active_validators])` * Let `total_balance = sum([v.balance for v in active_validators])`
* Let `this_cycle_attestations = [a for a in state.pending_attestations if s <= a.slot < s + CYCLE_LENGTH]` (note: this is the set of attestations _of slots in the cycle `s...s+CYCLE_LENGTH-1`_, not attestations _that got included in the chain during the cycle `s...s+CYCLE_LENGTH-1`) * Let `this_cycle_attestations = [a for a in state.pending_attestations if s <= a.slot < s + CYCLE_LENGTH]` (note: this is the set of attestations _of slots in the cycle `s...s+CYCLE_LENGTH-1`_, not attestations _that got included in the chain during the cycle `s...s+CYCLE_LENGTH-1`_)
* Let `prev_cycle_attestations = [a for a in state.pending_attestations if s - CYCLE_LENGTH <= a.slot < s] * Let `prev_cycle_attestations = [a for a in state.pending_attestations if s - CYCLE_LENGTH <= a.slot < s]
* Let `this_cycle_s_attestations = [a for a in this_cycle_attestations if get_block_hash(state, block, s) in a.parent_hashes] * Let `this_cycle_s_attestations = [a for a in this_cycle_attestations if get_block_hash(state, block, s) in a.parent_hashes]
* Let `s_attesters` be the union of the validator index sets given by `[get_attestation_participants(state, a) for a in this_cycle_s_attestations]` * Let `s_attesters` be the union of the validator index sets given by `[get_attestation_participants(state, a) for a in this_cycle_s_attestations]`