JohnDinhDev

Reset Udemy Progress

Last Updated: 09/30/2022

Step 1. Go to Udemy course in browser

Go to the course and have any video up. The following code relies on the right sidebar to be visible to uncheck all your progress.

Step 2. Open browser console

You can do this with ctrl+shift+j and making sure the console tab is selected for chrome/brave

dmarchuk

Django Migrations without Downtime

The following instructions describe a set of processes allowing you to run Django database migrations against a production database without having to bring the web service down.

Note that in the below instructions, migrations are all run manually at explicit points, and are not an automatic part of the deployment process.

Adding Fields or Tables

Adding a (nullable) field or a new table

1. Make the model or column addition in your code.

camertron

import unittest

def enum(obj):
    if type(obj) == list:
        return EnumList(obj)
    elif type(obj) == dict:
        return EnumDict(obj)

class Enumerable(object):
    def each(self, cb):

ProGM

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

Tables

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Table alias

AkhileshNS

{"version":1,"resource":"file:///c%3A/_WORKING/Development/DATA%20INTENSIVE%20SYSTEMS/a3-AkhileshNS/src/server.ts","entries":[{"id":"DgZJ.ts","timestamp":1650304331152},{"id":"6yBg.ts","timestamp":1650304566422},{"id":"gM4P.ts","timestamp":1650304603067},{"id":"EWvr.ts","timestamp":1650315339108},{"id":"t8S2.ts","timestamp":1650315386367}]}

tejasbubane

# For stackoverflow question: https://stackoverflow.com/questions/55339129/how-to-test-lock-mechanism

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  # Activate the gem you are reporting the issue against.

dlaehnemann

Whenever I want to create pull requests to a repo that I don't have write access to, I:

1. Fork the original repo to my account.
2. Clone the original repo to my local machine.
3. Add my fork as an additional remote and make it the push default.
4. Make changes in a new branch locally.
5. Push this branch to my fork.
6. Create a pull request from there.

fnky

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

• Ctrl-Key: ^[
• Octal: \033
• Unicode: \u001b
• Hexadecimal: \x1B
• Decimal: 27

YumaInaura

Vim—Edit clipboard text directly ( Example using Mac OS pbcopy / pbpaste commands )

Ease way

Put blow line in your rc file ( e.g ~/.bashrc ~/.zshrc )

Restart your shell and hit pbvim.

function pbvim (){

heroheman

Ranger Cheatsheet

General

Shortcut	Description
ranger	Start Ranger
Q	Quit Ranger
R	Reload current directory
?	Ranger Manpages / Shortcuts