Is it possible for start and auction and bid for multiple names(ENS) in a single transaction?

Question

For example if I want to register three TLD domains:

example1.eth

example2.eth

example3.eth

Can I make one startAuctionAndBid transaction for all three?

Answer 1

Can I make one startAuctionAndBid transaction for all three?

Yes, but it's called startAuctionsAndBid (note the extra s):

Here is the Solidity version of the contract method, as a reference for how to use it:

/**
 * @dev Start a set of auctions and bid on one of them
 *
 * This method functions identically to calling `startAuctions` followed by `newBid`,
 * but all in one transaction.
 *
 * @param hashes A list of hashes to start auctions on.
 * @param sealedBid A sealed bid for one of the auctions.
 */
function startAuctionsAndBid(bytes32[] hashes, bytes32 sealedBid) public payable {
    startAuctions(hashes);
    newBid(sealedBid);
}