0xSharp sharp2448

Why I use `node`, `deno`, `bun`, `qjs`, `tjs` at the same time.

Winds up being a (not the) rather comprehensive JavaScript toolbox. The idea being for the modern JavaScript programmer can use all of the tools available for a given requirement, task or job, without preference for any. No external bundlers or compilers are needed. No frameworks are needed. I can use qjs or tjs for systems with minimal RAM and disk space; and when I want to use Web API's deno makes an effort to provide those interfaces. In some cases I can run the exact same code in bun, deno, and node, which provides a means to perform 1:1 testing as to performance.

There's probably a few things I am unintentionally omitting below. These are just a brief synposis. I'll update accordingly.

Match Crypto Wallet Addresses using Regular Expressions

The following regular expressions are crafted to match some commonly used cryptocurrency wallet address types. This document details the Regex components and pattern tests to match Ethereum, Bitcoin, Dash and Monero addresses.

🌀 Click the images below to view the tested patterns.

Ethereum (ETH)

/^0x[a-fA-F0-9]{40}$/g

Install Zsh and Oh-my-zsh on CentOS 7

Based on this article

ALL INSTALLATIONS ASSUME YES WHEN PROMPTED, that's what -y does

This script can be copy paste to ssh as is. No hands installation. :-)

yum install zsh -y

Using Git to Manage a Live Web Site

Overview

As a freelancer, I build a lot of web sites. That's a lot of code changes to track. Thankfully, a Git-enabled workflow with proper branching makes short work of project tracking. I can easily see development features in branches as well as a snapshot of the sites' production code. A nice addition to that workflow is that ability to use Git to push updates to any of the various sites I work on while committing changes.

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

	# syntax=docker/dockerfile:1
	# Keep this syntax directive! It's used to enable Docker BuildKit

	# Based on https://github.com/python-poetry/poetry/discussions/1879?sort=top#discussioncomment-216865
	# but I try to keep it updated (see history)

	################################
	# PYTHON-BASE
	# Sets up all our shared environment variables
	################################

	// in web3
	web3.utils.keccak256(web3.eth.abi.encodeParameters(['string', 'address'], ['foo', '0x4ccA5F2f01746B1c13ca7a3Dab0462d225795D3A']))

	// in solidity
	keccak256(abi.encode("foo", 0x4ccA5F2f01746B1c13ca7a3Dab0462d225795D3A));