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dryruner / CoinbaseEthUsd.sol

Last active August 5, 2020 00:50

CoinbaseEthUsd Example

	/**
	*Submitted for verification at Etherscan.io on 2020-07-03
	*/

	pragma solidity ^0.5.0;

	/**
	* @title Ownable
	* @dev The Ownable contract has an owner address, and provides basic authorization control
	* functions, this simplifies the implementation of "user permissions".

dryruner / SimpleDice.sol

Last active August 22, 2020 23:58

DOSRandom() example

	/**
	*Submitted for verification at Etherscan.io on 2020-08-22
	*/

	pragma solidity ^0.5.0;

	/**
	* @title Ownable
	* @dev The Ownable contract has an owner address, and provides basic authorization control
	* functions, this simplifies the implementation of "user permissions".

dryruner / gist:2a6da4bb4da638770f55d4fc830f4fb5

Created June 2, 2019 08:13

Compute contract address in solidity

	pragma solidity ^0.4.25;

	contract ComputeContractAddress
	{
	function addressFrom(address _origin, uint _nonce) public pure returns (address) {
	bytes memory data;
	if(_nonce == 0x00) data = abi.encodePacked(byte(0xd6), byte(0x94), _origin, byte(0x80));
	else if(_nonce <= 0x7f) data = abi.encodePacked(byte(0xd6), byte(0x94), _origin, byte(_nonce));
	else if(_nonce <= 0xff) data = abi.encodePacked(byte(0xd7), byte(0x94), _origin, byte(0x81), uint8(_nonce));
	else if(_nonce <= 0xffff) data = abi.encodePacked(byte(0xd8), byte(0x94), _origin, byte(0x82), uint16(_nonce));