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Let's take for example the following simple storage contract: pragma solidity ^0.5.6; contract SimpleStorage { uint storedData; function set(uint x) public { storedData = x; } function get() public view returns (uint) { return storedData; } } You can send a transaction to a (already deployed) smart contract with the ...


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That opcode is a recent addition to geth in the Constantinople release. You need to add the following to your genesis to enable Constantinople: "constantinopleBlock":0,


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