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Improve allocation in get_attestation_participants

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Paul Hauner 2019-03-10 21:07:09 +11:00
parent 53456a6c79
commit a44d80006a
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1 changed files with 5 additions and 3 deletions
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8
eth2/types/src/beacon_state.rs
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@ -531,12 +531,14 @@ impl BeaconState {
return Err(Error::InvalidBitfield); return Err(Error::InvalidBitfield);
} }
let mut participants = vec![]; let mut participants = Vec::with_capacity(committee.len());
for (i, validator_index) in committee.iter().enumerate() { for (i, validator_index) in committee.iter().enumerate() {
if bitfield.get(i).unwrap() { match bitfield.get(i) {
participants.push(*validator_index); Ok(bit) if bit == true => participants.push(*validator_index),
_ => {}
} }
} }
participants.shrink_to_fit();
Ok(participants) Ok(participants)
} }