Peter Hillerström peterhil

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

This guide assumes that you recently run brew upgrade postgresql and discovered to your dismay that you accidentally bumped from one major version to another: say 9.3.x to 9.4.x. Yes, that is a major version bump in PG land.

First let's check something.

brew info postgresql

The top of what gets printed as a result is the most important:

update object

var state = {
    id: 1,
    points: 100,
    name: "Goran"
};

var newState = {

	// REQUIRES:
	// moment.js - http://momentjs.com/

	// USAGE:
	// {{ someDate \| moment: [any moment function] : [param1] : [param2] : [param n]

	// EXAMPLES:
	// {{ someDate \| moment: 'format': 'MMM DD, YYYY' }}
	// {{ someDate \| moment: 'fromNow' }}

	en:
	errors: &errors
	messages:
	bad_uri: is an invalid url
	bad_protocol: must start with %{protocols}
	activemodel:
	errors:
	<<: *errors
	activerecord:
	errors:

	* {
	font-size: 12pt;
	font-family: monospace;
	font-weight: normal;
	font-style: normal;
	text-decoration: none;
	color: black;
	cursor: default;
	}

	function createUser(username, callback) {
	var connection = DatabaseClient.connect();
	var users = connection.call('collection', 'users');
	var query = users.call('query', {username: username});
	return query.then(function(existing){
	if(existing) throw new Error("User already exists: " + username);
	else return users.call('create', {username: username});
	}).fin(function(connection){ return connection.call('close'); });
	}

	#!/usr/bin/env zsh
	# -- encoding: utf-8 --
	# Copyright (c) 2015 by Peter Hillerström
	# License: MIT License

	# This can be sourced from zsh dotfiles. If you don't care about other
	# functions than `about`, put them inside the about function.
	# Output can be piped to GNU `fmt -s` command for nice formatting.

	about() {

	<!doctype html>

	<!-- Adapted from https://gist.github.com/tfausak/2222823 -->

	<html>
	<head>
	<title>Mobile-ready web app</title>

	<!-- CONFIGURATION -->

	import csv
	from django.http import HttpResponse

	def export_as_csv_action(description="Export selected objects as CSV file", fields=None, exclude=None, header=True):
	"""
	This function returns an export csv action
	'fields' and 'exclude' work like in django ModelForm
	'header' is whether or not to output the column names as the first row
	"""
	def export_as_csv(modeladmin, request, queryset):