riordant’s gists

riordant / get_inner_struct_mapping.ts

Last active March 22, 2022 07:03

Retrieve the storage slot value of a (mapping => Struct) -> (mapping => uint) in Solidity.

riordant / test-fork.ts

Created December 22, 2021 09:02

Separate Hardhat task to run tests on mainnet fork

	import {task, types} from "hardhat/config";

	task("test-fork", "Runs mocha tests on a fork of mainnet").addOptionalParam(
	"url",
	"The URL of the Mainnet archive node",
	"",
	types.string
	).setAction(async (taskArgs, hre) => {
	hre.config.networks.hardhat.forking = {
	url: taskArgs.url,

riordant / etherscan-get-multifile.py

Created December 16, 2021 08:56

Download a multifile-verified contract from Etherscan as a simple flattened contract.

	from etherscan import Etherscan
	import os
	import json
	from time import sleep

	# setup
	ethscan = Etherscan('YOUR_API_KEY_HERE')
	# NOTE: must be a multi-verified contract to work. Staked Aave used as example here
	address = "0x4da27a545c0c5b758a6ba100e3a049001de870f5"

riordant / DSMath-ethers.js

Created February 8, 2021 16:24

ethers DSMath - perform decimal precision operations with ethers BigNumber. Adapted from Solidity DSMath library.

	const { ethers } = require("ethers");
	BigNumber = ethers.BigNumber

	module.exports = {
	WAD: ethers.utils.parseUnits('1'),

	//rounds to zero if x*y < WAD / 2
	wmul: function(x, y) {
	return x.mul(y).add(WAD.div(2)).div(WAD);
	},

riordant / geth-dev-mode.sh

Last active November 29, 2021 09:50

Geth Gananche emulator - set up Geth like Ganache. Geth produces better debugging output for Remix and Truffle Debug.

	# cd ~/.geth/

	# Add following script here

	# Create ~/.geth/keys, ~/geth/dev

	# Add keys 0.txt,1.txt..N.txt, and passwords.txt, with each line in passwords.txt representing password for that account

	# import into ~/geth/dev: geth account import --datadir ~/.geth/chain ~/.geth/dev/0.txt etc., enter same password

riordant / miner.js

Created January 21, 2021 09:06

Miner for ganache-cli. run ganache-cli -d and this will mine blocks at an average of 5 seconds.

	var ethers = require('ethers');

	// ganache deterministic mnemonic
	const mnemonic = 'myth like bonus scare over problem client lizard pioneer submit female collect';
	// use last funded account
	const account = "m/44'/60'/0'/0/9";
	// default ganache provider
	const provider = new ethers.providers.JsonRpcProvider("http://127.0.0.1:8545");

	function getRandomInt(min, max) {

riordant / TokenWithNameSymbolChange.sol

Created January 6, 2021 06:51

OpenZeppelin ERC20 token with changeable name/symbol

	pragma solidity ^0.5.0;

	import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.3.0/contracts/token/ERC20/ERC20.sol";
	import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.3.0/contracts/token/ERC20/ERC20Detailed.sol";
	import "https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v2.3.0/contracts/ownership/Ownable.sol";

	contract Token is ERC20, ERC20Detailed, Ownable {

	string private _name = "DAOMaker Token";
	string private _symbol = "DAO";

riordant / account_liquidity_balancer.js

Created November 27, 2020 07:26

Get info on provided address for provided Balancer pool.

	// npm install axios
	// node account_liquidity_balancer.js
	axios = require('axios')

	// variables
	const poolId = "0xd3d14de568990854705c40221f75efbad8c0c981";
	const userAddress = "0x64a63ef1b19519be8afb9080e5725bd608d6f389";

	async function getPool(poolId, userAddress) {
	const response = await axios({

riordant / account_liquidity_uniswap.js

Last active November 11, 2020 04:51

Get Liquidity (in USD) for all token pairings for an account from the UniSwap subgraph.

	// npm install @apollo/client node-fetch apollo-link-http
	// node account_liquidity_uniswap.js

	apolloClient = require('@apollo/client')
	fetch = require('node-fetch')
	httpLink = require('apollo-link-http')

	ApolloClient = apolloClient.ApolloClient
	HttpLink = httpLink.HttpLink
	InMemoryCache = apolloClient.InMemoryCache

riordant / clean_zip_creation.cpp

Created December 21, 2018 16:00

Clean ZIP file creation using minizip in C++



	/*
	(Extension of the main answer for the question here - https://stackoverflow.com/questions/11370908/how-do-i-use-minizip-on-zlib)
	* Creates a ZIP file -
	after specifying an absolute path to a "root" directory, all filepaths derived from this path are stored in the ZIP file,
	with only files and their paths from the root preserved.
	eg. root path: /a/b/c/d/
	filepaths(from root path): e/f.txt
	g.dat

tadhg riordant