a7e91856f3
* Update to ganache-cli v6.1.0 and truffle v4.1.0 * Update to stable version of ganache-cli * fix: update event emission warning - Fix event emission warnings for solidity 4.21 after truffle has been updated to use this version * fix pr review comments * update to truffle v4.1.5 * update package-lock * add additional emit keywords * update solidity-coverage to 0.4.15 * update to solium 1.1.6 * fix MerkleProof coverage analysis by testing through wrapper * change version pragma to ^0.4.21 * fix solium linting errors
29 lines
1010 B
Solidity
29 lines
1010 B
Solidity
pragma solidity ^0.4.21;
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/**
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* Utility library of inline functions on addresses
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*/
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library AddressUtils {
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/**
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* Returns whether the target address is a contract
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* @dev This function will return false if invoked during the constructor of a contract,
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* as the code is not actually created until after the constructor finishes.
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* @param addr address to check
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* @return whether the target address is a contract
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*/
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function isContract(address addr) internal view returns (bool) {
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uint256 size;
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// XXX Currently there is no better way to check if there is a contract in an address
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// than to check the size of the code at that address.
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// See https://ethereum.stackexchange.com/a/14016/36603
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// for more details about how this works.
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// TODO Check this again before the Serenity release, because all addresses will be
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// contracts then.
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assembly { size := extcodesize(addr) } // solium-disable-line security/no-inline-assembly
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return size > 0;
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}
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}
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