Ben Wheeler benjiwheeler

🧰 Git Basics Cheat Sheet

Topic	Purpose	Command / Action	Notes
Install Git	Install Git on your computer	macOS: `brew install git` Ubuntu/Debian: `sudo apt update && sudo apt install git` Windows: git-scm.com/downloads	Windows users should install Git Bash
Configure user info	Set your name and email for commits	`git config --global user.name "Your Name"` `git config --global user.email "[email protected]"`	Run once per computer; use `git config --list` to verify
Authenticate with GitHub	Enable push/pull access	SSH method: `ssh-keygen -t ed25519 -C "[email protected]"` `cat ~/.ssh/id_ed25519.pub` → add key on GitHub → Settings → SSH Keys	SSH is recommended for long-term setup
Start a repo	Create a Git repository in a folder	`git init`	Creates a hidden `.git` folder
Add files	Track all files in the direct

open a terminal (on Mac, you can use the "Terminal" application). In these instructions, when it says "run some command", that means to type or copy/paste that command into a prompt in your terminal.
have a directory with code in it, with an index.html file that does what you want when you view it in a browser. Navigate into that directory in the terminal, using the cd command, like: cd ~/somefolder/someotherfolder/whereyourcodeis/
have the git program installed (you can check if it is installed by running which git; if it does nothing, git is not installed. If it shows you a directory path that ends in "git", it is installed.)
in a separate terminal window, navigate to your same code directory, and run Claude Code using claude
go to github.com; create an account if you don't have one.
create a GitHub project; call it whatever you want (I suggest not using spaces)
once it's created, you'll see a page that says "Quick setup". Under it should be a section called "…or create a n

Adapted from @tom-doerr

Variable Naming:
- Use explicit, type-indicating prefixes for numeric values (e.g., numFireTokens vs fire)
- Prefer descriptive suffixes that indicate the data's purpose (e.g., maxWaterTokens, fireSpaces)
- Avoid ambiguous single-word names that could represent multiple concepts

	import time
	import timeit
	from multiprocessing.dummy import (Pool, TimeoutError)

	def delay(mynum, delay_secs):
	print("starting #%s" % mynum)
	time.sleep(delay_secs)
	print("done with #%s" % mynum)
	return True

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta http-equiv="content-type" content="text/html; charset=utf-8">
	<meta name="viewport" content="width=device-width">
	<title>JS Bin</title>
	<script src="https://code.jquery.com/jquery-git.js"></script>
	<script language="JavaScript">
	$( document ).ready(function() {
	$("#add").on("click", function() {

	elementIsVisible (element) {
	return this.driver.wait(until.elementIsVisible(element));
	}
	elementIsNotVisible (element) {
	return this.driver.wait(until.elementIsNotVisible(element));
	}


	const abbyElement = await findByText('Abby'); // Should show editor for new costume
	await elementIsVisible(abbyElement);


	const costumesTabElement = await findByText('Costumes');
	await driver.wait(() => {
	return costumesTabElement.isDisplayed().then(displayed => {
	console.log('got here A');
	if (!displayed) return false;
	console.log('got here B');
	// costumesTabElement.click();
	return costumesTabElement.isEnabled();
	});

	import datetime
	import pytz

	# careful, don't assume now() is nyc time! on ec2, it's utc time.
	def datetime_from_tz_naive_nyc_to_tz_aware_utc(nyc_datetime_tz_naive):
	nyc_datetime_tz_aware = pytz.timezone('US/Eastern').localize(nyc_datetime_tz_naive)
	return nyc_datetime_tz_aware.astimezone(pytz.utc)

	def utc_tz_aware(utc_datetime_tz_naive):
	return pytz.timezone('UTC').localize(utc_datetime_tz_naive)