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@xiaolai
xiaolai / download-all-my-kindle-books.ipynb
Last active August 16, 2023 01:17
a jupyter notebook for downloading all books to devices, using Selenium.
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import React, { Component } from 'react';
import ERC20_ABI from "./ERC20_ABI.json";
import { ethers } from "ethers";
class Metamask extends Component {
constructor(props) {
super(props);
@Chmarusso
Chmarusso / DamnSimpleNftStake.sol
Created February 13, 2022 15:54
Super Simple NFT staking
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
import "@openzeppelin/contracts/token/ERC1155/utils/ERC1155Receiver.sol";
contract NftStaker {
IERC1155 public parentNFT;
struct Stake {
@miguelmota
miguelmota / multicall.go
Created June 12, 2021 01:10
Golang MultiCall solidity contract call example
package main
import (
"context"
"encoding/hex"
"fmt"
"strings"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
@xiaolai
xiaolai / Personal Library.md
Last active June 6, 2022 14:01
My own library
  1. Download and pin books at https://read.amazon.com, and use epubor KCR converter to convert them into epubs.
  2. Download audio books at https://audible.com, with aax format.
  3. Obtain your activation bytes with the instruction of this post.
  4. Install ffmpeg with brew.
  5. Install audible-converter with npm. (File name will be extended automatically)
audible-converter "*.aax" -a <your-activation-bytes>
  1. Install atomicparsley with brew. (to add artwork to converted m4a files) Bash script to add artworks to m4a files:
@miguelmota
miguelmota / rsa_util.go
Last active September 27, 2024 02:42
Golang RSA encrypt and decrypt example
package ciphers
import (
"crypto/rand"
"crypto/rsa"
"crypto/sha512"
"crypto/x509"
"encoding/pem"
"log"
)
@PurpleBooth
PurpleBooth / README-Template.md
Last active November 20, 2024 15:55
A template to make good README.md

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

@Kartones
Kartones / postgres-cheatsheet.md
Last active November 20, 2024 14:37
PostgreSQL command line cheatsheet

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
@cobyism
cobyism / gh-pages-deploy.md
Last active November 19, 2024 09:32
Deploy to `gh-pages` from a `dist` folder on the master branch. Useful for use with [yeoman](http://yeoman.io).

Deploying a subfolder to GitHub Pages

Sometimes you want to have a subdirectory on the master branch be the root directory of a repository’s gh-pages branch. This is useful for things like sites developed with Yeoman, or if you have a Jekyll site contained in the master branch alongside the rest of your code.

For the sake of this example, let’s pretend the subfolder containing your site is named dist.

Step 1

Remove the dist directory from the project’s .gitignore file (it’s ignored by default by Yeoman).

@kylelemons
kylelemons / regexpswitch.go
Created August 18, 2011 16:34
Switch on a regex pattern
package main
import "fmt"
import "regexp"
var email = regexp.MustCompile(`^[^@]+@[^@.]+\.[^@.]+$`)
var shortPhone = regexp.MustCompile(`^[0-9][0-9][0-9][.\-]?[0-9][0-9][0-9][0-9]$`)
var longPhone = regexp.MustCompile(`^[(]?[0-9][0-9][0-9][). \-]*[0-9][0-9][0-9][.\-]?[0-9][0-9][0-9][0-9]$`)
func main() {