what dose CTxWitness use for?

[lovecodelc]

Bitcoin Core code defines class data type "CTransaction", i see it has a data member:CTxWitness, what dose CTxWitness use for?
and it has a data member:const uint256 hash /** Memory only. */, it means if a transaction in mempool, it has this data member:hash?
or if on disk, it has no data member:hash?

thank you.

[achow101]

CTxWitness is for segwit. Specifically it is for the witnesses included in the segwit serialization.

and it has a data member:const uint256 hash /** Memory only. */, it means if a transaction in mempool, it has this data member:hash?
or if on disk, it has no data member:hash?

It means that that hash is kept in the memory and not on disk.

[lovecodelc]

Thank you.

CTxWitness is for segwit. Specifically it is for the witnesses included in the segwit serialization.

and it has a data member:const uint256 hash /** Memory only. */, it means if a transaction in mempool, it has this data member:hash?
or if on disk, it has no data member:hash?

It means that that hash is kept in the memory and not on disk.

[IS1982]

achow101 thanks for your answear. I was looking for it for a long time.