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eth2.0-specs
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Danny Ryan 2019-01-26 15:39:57 -07:00
parent b1ea3b2667
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11
specs/core/0_beacon-chain.md
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@ -937,11 +937,14 @@ def get_crosslink_committees_at_slot(state: BeaconState,
"""
Returns the list of ``(committee, shard)`` tuples for the ``slot``.
"""
current_epoch_slot = get_current_epoch(state) * EPOCH_LENGTH
assert current_epoch_slot <= slot + EPOCH_LENGTH
assert slot < current_epoch_slot + EPOCH_LENGTH
epoch = slot_to_epoch(slot)
current_epoch = get_current_epoch(state)
previous_epoch = current_epoch - 1 if epoch > GENESIS_EPOCH else current_epoch
next_epoch = current_epoch + 1
if slot < current_epoch_slot:
assert previous_epoch <= epoch < next_epoch
if epoch < current_epoch:
committees_per_slot = get_previous_epoch_committee_count_per_slot(state)
seed = state.previous_epoch_seed
shuffling_epoch = state.previous_calculation_epoch