New answers tagged genesis
1
As of version 0.5.12, Solidity includes an assembly function chainid() that provides access to the new CHAINID opcode:
function getChainID() external view returns (uint256) {
uint256 id;
assembly {
id := chainid()
}
return id;
}
To use it, ensure you set the compiler's EVM version to Istanbul with the --evm-version istanbul flag.
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