dmsul

NOTE: Specific examples given for options, flags, commands variations, etc., are not comprehensive.

NORMAL MODE

Vim has 2 main "modes", that chance the behavior of all your keys. The default mode of Vim is Normal Mode and is mostly used for moving the cursor and navigating the current file.

Some important (or longer) commands begin with ":" and you will see the text you enter next at the bottom left of the screen.

:q[uit] - quit (the current window of) Vim. ("Window" here is internal to Vim, not if you have multiple OS-level windows of Vim open at once.)
:q! - force quit (if the current buffer has been changed since the last save)
:e[dit] {filename} - read file {filename} into a new buffer.

gkaemmer

Elixir Supervision Trees Made Easy

I started with Elixir just a couple weeks after the switch from 1.4 to 1.5, so the bulk of online resources were out of date (or at least resulted in deprecation warnings). This guide is for defining Elixir 1.5 supervised modules.

It's not actually terribly complicated. It's just sometimes unclear from examples what's implemented by the language and what you actually have to implement yourself.

Say we want a supervision tree like this (where each atom is a process):

    :a

/ \

davoclavo

emacs --daemon to run in the background. emacsclient.emacs24 <filename/dirname> to open in terminal

NOTE: "M-m and SPC can be used interchangeably".

• Undo - C-/
• Redo - C-?
• Change case: 1. Camel Case : M-c 2. Upper Case : M-u

3. Lower Case : M-l

mars

# Ancestor for JSON-API serializers, implements
# "application/vnd.api+json" media type conventions.
#
# See: http://jsonapi.org
#
class JsonApiSerializer < ActiveModel::Serializer

  # Always make pluralized root JSON property.
  #
  def self.inherited(subclass)

stevenharman

# /config/initializers/sidekiq.rb

current_web_concurrency = Proc.new do
  web_concurrency = ENV['WEB_CONCURRENCY']
  web_concurrency ||= Puma.respond_to?
  (:cli_config) && Puma.cli_config.options.fetch(:max_threads)
  web_concurrency || 16
end

local_redis_url = Proc.new do

machty

Query Param API Examples

• Search queries
• Sort: client-side, no refiring of model hook
• Sort: server-side, refire model hook
• Pagination + Sorting
• Boolean values. False value removes QP from URL
• Global query params on app route
• Opt-in to full transition via refresh()
• replaceUrl by changing controller QP property

snooc

user www-data;
worker_processes  4;

pid /var/run/nginx.pid;

worker_rlimit_nofile 8192;

events {
    worker_connections  1024;
}

sr75

just change out app_name for your purposes

openssl genrsa 2048 > app_name-wildcard.key

openssl req -new -x509 -nodes -sha1 -days 3650 -key app_name-wildcard.key > app_name-wildcard.cert

# Common Name (eg, your name or your server's hostname) []:*.app_name.com

openssl x509 -noout -fingerprint -text < app_name-wildcard.cert > app_name-wildcard.info

wrburgess

Grab new backup of database

Command: heroku pgbackups:capture --remote production

Response: >>> HEROKU_POSTGRESQL_COLOR_URL (DATABASE_URL) ----backup---> a712

Get url of backup download

Command: heroku pgbackups:url [db_key] --remote production

tpope

#!/usr/bin/env ruby
# Install in PATH as foremux

if %w(help --help -h).include?(ARGV.first)
  $stderr.puts <<-help
Usage:
  foremux [PROCESS]

Options:
  -e, [--env=ENV]           # Specify an env file to load, defaults to .env