To check whether two bitfields are disjoint you can use x.intersection(&y).is_empty(), however this allocates a new bitfield (vec-backed). If we can do this calculation without allocating it might improve attestation packing performance in Lighthouse, as this combination of calls is used extensively here:
https://github.com/sigp/lighthouse/blob/441fc1691b69f9edc4bbdc6665f3efab16265c9b/beacon_node/operation_pool/src/attestation_storage.rs#L128-L132
To check whether two bitfields are disjoint you can use
x.intersection(&y).is_empty(), however this allocates a new bitfield (vec-backed). If we can do this calculation without allocating it might improve attestation packing performance in Lighthouse, as this combination of calls is used extensively here:https://github.com/sigp/lighthouse/blob/441fc1691b69f9edc4bbdc6665f3efab16265c9b/beacon_node/operation_pool/src/attestation_storage.rs#L128-L132