We decided it’s time to explain how to make money in LORDLESS. Would you love to write an article to explain it? we prepare 3ETH for authors.
Rules:
- This activity will end on February 23 GST.
- Authors are free to complete the article, preferably with complete processes, images, and videos.
- The author posts the article link and @lordlessio on Twitter after the article complete.
- Finally, on February 23 GST, the LORDLESS officially selected the article ranking.
Rewards for author:
- 1.5 ETH for first place
- 0.4 ETH for second place
- 0.2 ETH for third place
- 0.1 ETH for 4th-8th place
LORDLESS implemented the features mentioned in this article;
On the mobile side, LORDLESS will guide users to open web pages with Trust Wallet in the absence of Web3.
If the user does not install Trust Wallet, we will prompt to download
Contract Code
pragma solidity ^0.4.21;
import "../node_modules/openzeppelin-solidity/contracts/ownership/Ownable.sol";
import "../node_modules/openzeppelin-solidity/contracts/token/ERC20/ERC20.sol";
contract Airdrop is Ownable {
/**
* @dev daAirdrop to address
* @param _tokenAddr address the erc20 token address
* @param dests address[] addresses to airdrop
* @param values uint256[] value(in ether) to airdrop
*/
function doAirdrop(address _tokenAddr, address[] dests, uint256[] values) onlyOwner public
returns (uint256) {
uint256 i = 0;
while (i < dests.length) {
ERC20(_tokenAddr).transferFrom(msg.sender, dests[i], values[i] * (10 ** 18));
i += 1;
}
return(i);
}Usage
- set approve to this airdrop contract address
- call the doAirdrop method with :
- _tokenAddr : erc20 token address
- dests: addresses that airdrop to
- values…
