npearce

UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.

Amazon changed the install in Linux 2. One no-longer using 'yum' See: https://aws.amazon.com/amazon-linux-2/release-notes/

Docker CE Install

sudo amazon-linux-extras install docker
sudo service docker start

pvik

An animated cheatsheet for smartparens using the example configuration specified here by the smartparens author. Inspired by this tutorial for paredit.

Traversal

C-M-f	sp-forward-sexp
C-M-b	sp-backward-sexp

mingfang

openssl rsa -in ~/.ssh/id_rsa -outform pem > id_rsa.pem
chmod 600 id_rsa.pem

alukach

from django.contrib import admin, messages
from django.http import HttpResponseRedirect
from django.shortcuts import render

from my_app.forms import CustomForm


class FakeModel(object):
    class _meta:
        app_label = 'my_app'  # This is the app that the form will exist under

jasom

(defun increment (sequence val n)
  (substitute (1+ val) val sequence
	      :from-end (< n 0)
	      :count (if (= n 0) nil (abs n))))

nijikokun

  var user = {
    validateCredentials: function (username, password) {
      return (
          (!(username += '') || username === '') ? { error: "No Username Given.", field: 'name' }
        : (!(username += '') || password === '') ? { error: "No Password Given.", field: 'pass' }
        : (username.length < 3)                  ? { error: "Username is less than 3 Characters.", field: 'name' }
        : (password.length < 4)                  ? { error: "Password is less than 4 Characters.", field: 'pass' }
        : (!/^([a-z0-9_-]+)$/i.test(username))   ? { error: "Username contains invalid characters.", field: 'name' }
        : false
      );

creationix

Object.defineProperty(Object.prototype, "extend", {value: function (obj) {
  obj.__proto__ = this;
  return obj;
}});
Object.defineProperty(Object.prototype, "new", {value: function () {
  var obj = Object.create(this);
  if (obj.initialize) obj.initialize.apply(obj, arguments);
  return obj;
}});