PaulRBerg’s gists

PaulRBerg / getRandomEthereumAddress.ts

Last active September 2, 2021 20:07

Random Ethereum address generator written in TypeScript

	export function getRandomEthereumAddress(): string {
	const length: number = 40;
	const number: string = [...Array(length)]
	.map(() => {
	return Math.floor(Math.random() * 16).toString(16);
	})
	.join("");
	return "0x" + number;
	}

PaulRBerg / sablier-v1.1-streams.graphql

Created August 19, 2021 22:32

GraphQL query for getting the Sablier v1.1 streams created by a given sender

	{
	streams(where: { sender: "ADDRESS_HERE"}) {
	id
	deposit
	cancellation {
	id
	recipientBalance
	senderBalance
	}
	recipient

PaulRBerg / IErc20.d.ts

Created August 13, 2021 14:01

Incorrect TypeChain bindings for IErc20.d.ts

	/* Autogenerated file. Do not edit manually. */
	/* tslint:disable */
	/* eslint-disable */

	import {
	ethers,
	EventFilter,
	Signer,
	BigNumber,
	BigNumberish,

PaulRBerg / typechain-index.ts

Created August 12, 2021 10:10

Example for a "typechain/index.ts" file

	/* Autogenerated file. Do not edit manually. */
	/* tslint:disable */
	/* eslint-disable */
	export type { IOwnable } from "./IOwnable";
	export type { Ownable } from "./Ownable";
	export type { Erc20 } from "./Erc20";
	export type { Erc20Permit } from "./Erc20Permit";
	export type { Erc20Recover } from "./Erc20Recover";
	export type { IErc20 } from "./IErc20";
	export type { IErc20Permit } from "./IErc20Permit";

PaulRBerg / HifiProxyTarget.abi.json

Created August 6, 2021 12:47

ABI for HifiProxyTarget (with the `depositCollateralAndBorrowHTokenAndAddLiquidity` function)

	[
	{
	"inputs": [
	{
	"internalType": "address",
	"name": "target",
	"type": "address"
	}
	],
	"name": "CallToNonContract",

PaulRBerg / github-actions-macos-error.txt

Created July 14, 2021 12:18

	YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT No package manager detected; defaulting to Yarn
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT ➤ YN0000: LICENSE
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT ➤ YN0000: index.js
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT ➤ YN0000: package.json
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT ➤ YN0000: readme.md
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT ➤ YN0000: Package archive generated in /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668/package.tgz
	➤ YN0000: │ /private/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/xfs-d4fad668 STDOUT ➤ YN0000: Done in 0s 46ms
	➤ YN0000: │ /private/v

PaulRBerg / PRBMathUD60x18Consumer.sol

Last active March 22, 2022 15:00

Example consumer contract for PRBMathUD60x18 library: https://github.com/paulrberg/prb-math

	// SPDX-License-Identifier: UNLICENSED
	pragma solidity >=0.8.0;

	import "@prb/math/contracts/PRBMathUD60x18.sol";

	contract UnsignedConsumer {
	using PRBMathUD60x18 for uint256;

	/// @notice Calculates x*1e18÷y while handling possible intermediary overflow.
	function unsignedDiv(uint256 x, uint256 y) external pure returns (uint256 result) {

PaulRBerg / prepare-package.ts

Last active July 16, 2021 12:09

Hardhat script for generating npm-ready folders for your contracts and typechain artifacts (with ethers-v5 as the target). Copied from https://github.com/hifi-finance/hifi-protocol/blob/2230a41269097c10183a0d72683345fe3a256f18/scripts/prepare-package.ts

	import path from "path";

	import fsExtra from "fs-extra";
	import hre from "hardhat";
	import { Artifact } from "hardhat/types";

	const artifactsDir: string = path.join(__dirname, "..", "artifacts");
	const contracts: string[] = [
	"Admin",
	"AdminInterface",

PaulRBerg / PowerNumberFormQuestion.txt

Created April 6, 2021 12:20

I wanted to post this question on mathematica.stackexchange.com but I couldn't because of this error: "Your post appears to contain code that is not properly formatted as code. Please indent all code by 4 spaces using the code toolbar button or the CTRL+K keyboard shortcut"

	Being in need of calculating the following numbers with 18 decimals of precision:

	$$
	2^{2^{-x}}, x\in{\mathbb{N}}
	$$

	I looked for what built-in symbols can help me and found [Power](https://reference.wolfram.com/language/ref/Power.html) and [NumberForm](https://reference.wolfram.com/language/ref/NumberForm.html). I tried an example:

	```mathematica
	NumberForm[Power[2, 2^-3], 18]

PaulRBerg / FullMath.sol

Last active July 18, 2022 15:51

Remco Bloemen's "mulDiv" ported to Solidity v0.8 by Paul Razvan Berg. See latest: https://github.com/paulrberg/prb-math/blob/86c068e21f9ba229025a77b951bd3c4c4cf103da/contracts/PRBMath.sol#L480-L537

	/// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
	/// @param a The multiplicand
	/// @param b The multiplier
	/// @param denominator The divisor
	/// @return result The 256-bit result
	/// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv
	function mulDiv(
	uint256 a,
	uint256 b,
	uint256 denominator

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