Alec Cunningham moosh3

Workflows (States) in Django

I'm going to cover a simple, but effective, utility for managing state and transitions (aka workflow). We often need to store the state (status) of a model and it should only be in one state at a time.

Common Software Uses

Publishing (Draft->Approved->Published->Expired->Deleted)

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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React Element Factories and JSX

You probably came here because your code is calling your component as a plain function call. This is now deprecated:

var MyComponent = require('MyComponent');

function render() {
 return MyComponent({ foo: 'bar' }); // WARNING

When an author builds the image https://github.com/cpuguy83/docker-jruby/blob/10eae9359611104c013e82206104b40f20fac377/1.7/Dockerfile:

FROM java:8
ENV JRUBY_VERSION 1.7.16
RUN mkdir /opt/jruby \
  && curl http://jruby.org.s3.amazonaws.com/downloads/${JRUBY_VERSION}/jruby-bin-${JRUBY_VERSION}.tar.gz \
  | tar -zxC /opt/jruby --strip-components=1 \
  && update-alternatives --install /usr/local/bin/ruby ruby /opt/jruby/bin/jruby 1
ENV PATH /opt/jruby/bin:$PATH

Auto-deploying built products to gh-pages with GitHub Actions

This is a set up for projects which want to check in only their source files, but have their gh-pages branch automatically updated with some compiled output every time they push.

A file below this one contains the steps for doing this with Travis CI. However, these days I recommend GitHub Actions, for the following reasons:

It is much easier and requires less steps, because you are already authenticated with GitHub, so you don't need to share secret keys across services like you do when coordinate Travis CI and GitHub.
It is free, with no quotas.
Anecdotally, builds are much faster with GitHub Actions than with Travis CI, especially in terms of time spent waiting for a builder.

Use these rapid keyboard shortcuts to control the GitHub Atom text editor on macOS.

Key to the Keys

⌘ : Command key
⌃ : Control key
⌫ : Delete key
← : Left arrow key
→ : Right arrow key
↑ : Up arrow key

	#!/bin/bash
	### Set default parameters
	# somewhat follows the conventions from: http://michal.karzynski.pl/blog/2013/10/29/serving-multiple-django-applications-with-nginx-gunicorn-supervisor/
	# designed to run on a debian symbiosis box if your interested why its /srv
	action=$1
	domain=$2
	appname=$3
	owner=$(who am i \| awk '{print $1}')
	sitesEnable='/etc/nginx/sites-enabled/'
	sitesAvailable='/etc/nginx/sites-available/'

	func EncodeStreamingVideo(streamingFile io.Reader, request ShouldCanceler) (*os.File, error) {
	outputFilename := generateFilename("mp4")

	// Actually start the command.
	cmd := exec.Command("ffmpeg",
	// Read input from stdin.
	"-i", "-",
	// ... environment-specific ffmpeg options ...
	"-y", outputFilename)

	# Hello, and welcome to makefile basics.
	#
	# You will learn why `make` is so great, and why, despite its "weird" syntax,
	# it is actually a highly expressive, efficient, and powerful way to build
	# programs.
	#
	# Once you're done here, go to
	# http://www.gnu.org/software/make/manual/make.html
	# to learn SOOOO much more.

	package main

	import (
	"fmt"
	"io"
	"io/ioutil"
	"net"
	"os"
	"strings"