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In the following example from the Solidity documentation, what does emit do?

highestBidder = msg.sender;
highestBid = msg.value;
emit HighestBidIncreased(msg.sender, msg.value);
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  • It means "when this transaction is written into the blockchain, write alongside it a HighestBidIncreased event with the current values of msg.sender and msg.value". Oct 28, 2019 at 15:19

1 Answer 1

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Emit keyword is used to emit an event in solidity, which can be read by the client in Dapp.

Event in solidity is to used to log the transactions happening in the blockchain.

Reference: https://solidity.readthedocs.io/en/v0.4.24/contracts.html#events

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