David Southard nacengineer

TL;DR

Create a backup:

pg_dumpall > mybackup.sql

Perform the upgrade:

sudo pg_dropcluster 9.4 main --stop

New Coffeescript programmers usually struggle with understanding the differences between -> and => function definitions. In order to clarify this common case of confusion, it helps to look at how such functions are compiled down to JavaScript.

class A

    constructor: () ->
        @funcA()
        @funcB()

 funcA: () -&gt;

Stimulus cheatsheet

Website: https://stimulusjs.org/
GitHub repo: https://github.com/stimulusjs/stimulus
Handbook: https://stimulusjs.org/handbook/introduction
Discourse: https://discourse.stimulusjs.org/

Lifecycle callbacks

initialize: once, when the controller is first instantiated
connect: anytime the controller is connected to the DOM

Phoenix 1.4 ships with exciting new features, most notably with HTTP2 support, improved development experience with faster compile times, new error pages, and local SSL certificate generation. Additionally, our channel layer internals receiveced an overhaul, provided better structure and extensibility. We also shipped a new and improved Presence javascript API, as well as Elixir formatter integration for our routing and test DSLs.

This release requires few user-facing changes and should be a fast upgrade for those on Phoenix 1.3.x.

Install the new phx.new project generator

The mix phx.new archive can now be installed via hex, for a simpler, versioned installation experience.

To grab the new archive, simply run:

	# unregister broken GHC packages. Run this a few times to resolve dependency rot in installed packages.
	# ghc-pkg-clean -f cabal/dev/packages*.conf also works.
	function ghc-pkg-clean() {
	for p in `ghc-pkg check $* 2>&1 \| grep problems \| awk '{print $6}' \| sed -e 's/:$//'`
	do
	echo unregistering $p; ghc-pkg $* unregister $p
	done
	}

	# remove all installed GHC/cabal packages, leaving ~/.cabal binaries and docs in place.