cwhinfrey

contract ContractSignerVerifier {
    // returns keccak256("isValidSigner") if signer is valid
    function isValidSigner(address _signer, bytes memory data) public view returns (bytes32);
}

interface IChannelArbiter {
    function channelValueForUpdate(address sender, address receiver, uint256 nonce) external view returns (uint256 value);
}

contract ChannelIdentifier {

cwhinfrey

pragma solidity ^0.5.5;

// Libs

library FooLib {
    struct Foo {
        uint a;
        uint b;
        uint c;
    }

cwhinfrey

pragma solidity ^0.5.2;

contract Create2FactoryBase {

  bytes private contractCode;

  constructor(bytes memory _contractCode) public {
    contractCode = _contractCode;
  }

cwhinfrey

pragma solidity ^0.5.0;

library ECDSA {
    /**
     * @dev Recover signer address from a message by using their signature
     * @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.
     * @param signature bytes signature, the signature is generated using web3.eth.sign()
     */
    function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
        bytes32 r;

cwhinfrey

interface Oracle {
    function isResultSetFor(uint256 id) external view returns (bool isSet);
    function resultFor(uint256 id) external view returns (bytes32 result);
}

// Optional, OraclePrimary must implement Oracle
interface OraclePrimary {
    event ResultSet(bytes32 _result, uint256 _id);
}

cwhinfrey

pragma solidity ^0.4.24;

library ECDSA {
    /**
     * @dev Recover signer address from a message by using their signature
     * @param hash bytes32 message, the hash is the signed message. What is recovered is the signer address.
     * @param signature bytes signature, the signature is generated using web3.eth.sign()
     */
    function recover(bytes32 hash, bytes signature) internal pure returns (address) {
        bytes32 r;

cwhinfrey

contract MemoryAndStorageViewer {
    
    uint256 storageVar1 = 23;
    bytes32 storageVar2 = 0x12345;
    uint8 storageVar3 = 55;
    uint8 storageVar4 = 123;
    
    function printStorage() 
        public
        view

cwhinfrey

pragma solidity ^0.4.24;

import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
import "../../introspection/ERC165.sol";


/**

cwhinfrey

Proposed directory structure:

contracts/
  escrow/
    ConditionalEscrow.sol
    Escrow.sol
    RefundEscrow.sol
  payment/
    PullPayment.sol
    SplitPayment.sol

cwhinfrey

pragma solidity ^0.4.24;

/**
 * @title SafeMath
 * @dev Math operations with safety checks that revert on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, reverts on overflow.