How to compare the transfer methods of call, send and transfer
This article is about how to conduct call, send and transfer transfer methods and comparison, the editor feels very practical, so share with you to learn, I hope you can learn something after reading this article, say no more, follow the editor to have a look.
Three ways of transferring money 1
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Address.transfer ()
Address.send ()
Address.call.value () .gas ()
Transfer transfer1
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Function transfer (address _ address) public payable {
_ address.transfer (msg.value)
}
Function transfer2 (address _ address) public payable {
_ address.transfer (10 * 10 / 18)
}
Transfer send1
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Function transfer4 (address _ address) public payable {
_ address.send (10 ether)
}
Transfer call1
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Function transfer5 (address _ address) public payable returns (bool) {
Return _ address.call.value (10 ether) ()
}
Comparison and summary 1
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Transfer, similar to send, is a transfer operation.
Transfer makes an error and throws an exception
If an error occurs in send or call, no exception is thrown, but true or false is returned.
Tansfer is more secure than send
Send and call will execute the following code even if the transfer fails.
Be careful to use the call function to transfer money, it is easy to reenter.
The above is how to compare the transfer methods of call, send and transfer. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.
