Roger Jungemann rjungemann

SQLite3 Cheat Sheet

Info

Download from: http://www.sqlite.org/download.html

Getting Started: http://www.sqlite.org/sqlite.html

How we incorporate next and cloudfront (2018-04-21)

Feel free to contact me at [email protected] or tweet at me @statisticsftw

This is a rough outline of how we utilize next.js and S3/Cloudfront. Hope it helps!

It assumes some knowledge of AWS.

Goals

ASCI art characters for creating diagrams

Characters:

Single line

ASCII code 191 = ┐ ( Box drawing character single line upper right corner )
ASCII code 192 = └ ( Box drawing character single line lower left corner )
ASCII code 193 = ┴ ( Box drawing character single line horizontal and up )
ASCII code 194 = ┬ ( Box drawing character single line horizontal down )

clj -m cljs.main -re nashorn

(def thread (.type js/Java "java.lang.Thread"))

(let [global-atom-lock
      (let [ctor (.type js/Java "java.util.concurrent.locks.ReentrantLock")]
        (new ctor))]

Gist

Package

\usepackage{tkz-euclide} % checked for version 3.02c

Point definitions

async/await is just the do-notation of the Promise monad

CertSimple just wrote a blog post arguing ES2017's async/await was the best thing to happen with JavaScript. I wholeheartedly agree.

In short, one of the (few?) good things about JavaScript used to be how well it handled asynchronous requests. This was mostly thanks to its Scheme-inherited implementation of functions and closures. That, though, was also one of its worst faults, because it led to the "callback hell", an seemingly unavoidable pattern that made highly asynchronous JS code almost unreadable. Many solutions attempted to solve that, but most failed. Promises almost did it, but failed too. Finally, async/await is here and, combined with Promises, it solves the problem for good. On this post, I'll explain why that is the case and trace a link between promises, async/await, the do-notation and monads.

First, let's illustrate the 3 styles by implementing

	# Set the gaudy prompt.

	# ^O puts terminal back into default text mode for every prompt,
	# preventing random glyphs.

	resetterm="\[\017\]"

	# \[ and \] prevent the shell from counting these characters
	# against the line length.

	// Copyright 2015 The Chromium Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import 'dart:async';

	import 'package:flutter/foundation.dart';
	import 'package:flutter/material.dart';
	import 'package:flutter/widgets.dart';

	# Replace <sentry_key>, <sentry-url> and <project-id> to formulate your CURL request. Don't forget to add a trailing slash to URL otherwise you'll get wierd CSRF errors!

	curl -X POST --data '{ "exception": [{ "type": "$ErrorMessage"}] }' -H 'Content-Type: application/json' -H "X-Sentry-Auth: Sentry sentry_version=7, sentry_key=<sentry_key>, sentry_client=raven-bash/0.1" https://<sentry-url>/api/<project-id>/store/