Allen.YL allenyllee

Warning This is SEVERELY outdated, the current jupyter version is > 6.X, please refer to your current jupyter notebook installation!

Disclaimer : I just copied those shortcuts from Jupyter Menú > Help > Keyboard Shortcuts, I didn't wrote them myself.

Check your current shortcuts in your Help, shortcuts coule have been modified by extensions or your past self.

Making Bookmarklets

I'm feeling very clever. I've got this sweet line of javascript that replaces "cloud" with "butt". My mom would LOVE this, but she doesn't computer very well. I'm afraid to show her the Developer Console and have her type/paste this in. But she IS pretty good at bookmarks, she knows just how to click those!

A bookmark normally takes you to a new web page. A bookmarklet is a bookmark that runs javascript on the current page instead of taking you to a new page. To declare that it is a bookmarklet, the "location" it points to starts with javascript:.

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

Original link: http://www.concentric.net/~Ttwang/tech/inthash.htm
Taken from: http://web.archive.org/web/20071223173210/http://www.concentric.net/~Ttwang/tech/inthash.htm
Reformatted using pandoc

Integer Hash Function

Thomas Wang, Jan 1997

last update Mar 2007

Let's say you have an iOS project, and you want to use some external library, like AFNetworking. How do you integrate it?

With submodules

Add the project to your repo:

git submodule add [email protected]:AFNetworking/AFNetworking.git Vendor/AFNetworking

or something to that effect.

	// XPath CheatSheet
	// To test XPath in your Chrome Debugger: $x('/html/body')
	// http://www.jittuu.com/2012/2/14/Testing-XPath-In-Chrome/


	// 0. XPath Examples.
	// More: http://xpath.alephzarro.com/content/cheatsheet.html


	'//hr[@class="edge" and position()=1]' // every first hr of 'edge' class

	/**
	* Retrieves all the rows in the active spreadsheet that contain data and logs the
	* values for each row.
	* For more information on using the Spreadsheet API, see
	* https://developers.google.com/apps-script/service_spreadsheet
	*/
	function readRows() {
	var sheet = SpreadsheetApp.getActiveSheet();
	var rows = sheet.getDataRange();
	var numRows = rows.getNumRows();

	#!/usr/bin/env bash

	# Generate a pseudo UUID
	uuid()
	{
	local N B C='89ab'

	for (( N=0; N < 16; ++N ))
	do
	B=$(( $RANDOM%256 ))

	"""
	Usage: python remove_output.py notebook.ipynb [ > without_output.ipynb ]
	Modified from remove_output by Minrk

	"""
	import sys
	import io
	import os
	from IPython.nbformat.current import read, write