Alvin Lai alvinlai

Rich Hickey on becoming a better developer

Rich Hickey • 3 years ago

Sorry, I have to disagree with the entire premise here.

A wide variety of experiences might lead to well-roundedness, but not to greatness, nor even goodness. By constantly switching from one thing to another you are always reaching above your comfort zone, yes, but doing so by resetting your skill and knowledge level to zero.

Mastery comes from a combination of at least several of the following:

Videos

Introduction to Functional Programming Johannes Weiß - https://vimeo.com/100786088
ReactiveCocoa at MobiDevDay Andrew Sardone - https://vimeo.com/65637501
The Future Of ReactiveCocoa Justin Spahr-Summers - https://www.youtube.com/watch?v=ICNjRS2X8WM
Enemy of the State Justin Spahr-Summers - https://www.youtube.com/watch?v=7AqXBuJOJkY
WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak - https://developer.apple.com/videos/play/wwdc2014/229/
Functioning as a Functionalist Andy Matuschak - https://www.youtube.com/watch?v=rJosPrqBqrA
Controlling Complexity in Swift Andy Matuschak - https://realm.io/news/andy-matuschak-controlling-complexity/

A look at cryptography in Python

Even if you know the basics, making the right choices matters a lot. A minor mistake can destroy the security of your system.

Links

repo: https://github.com/reaperhulk/pycon2015-crypto-tutorial
gist: https://gist.github.com/dmend/9a7269d5c521e72cc221
vm: https://4a95d8c077a100de3278-188294849580e8742c8bb57afd78c06c.ssl.cf2.rackcdn.com/pycon-2015-ubuntu.ova

Firefox bullshit removal

Updated: Just use qutebrowser (and disable javascript). The web is done for.

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Using OTP's observer (appmon replacement) remotely

$ ssh remote-host "epmd -names"
epmd: up and running on port 4369 with data:
name some_node at port 58769

Note the running on port for epmd itself and the port of the node you're interested in debugging. Reconnect to the remote host with these ports forwarded:

$ ssh -L 4369:localhost:4369 -L 58769:localhost:58769 remote-host

	package java8tests ;

	import java.util.function.BiFunction ;
	import java.util.function.Function ;

	public class Currying {

	public void currying() {
	// Create a function that adds 2 integers
	BiFunction<Integer,Integer,Integer> adder = ( a, b ) -> a + b ;

	defmodule App.Router do
	use Phoenix.Router

	resources "users", Controller.Users
	options "/users", Controller.Users, :options
	end

	func takeScreenshot(view: UIView) -> UIImageView {
	UIGraphicsBeginImageContext(view.frame.size)
	view.layer.renderInContext(UIGraphicsGetCurrentContext())
	let image = UIGraphicsGetImageFromCurrentImageContext()
	UIGraphicsEndImageContext()
	UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)

	return UIImageView(image: image)
	}

	sysctl -w fs.file-max=12000500
	sysctl -w fs.nr_open=20000500
	ulimit -n 4000000
	sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
	sysctl -w net.ipv4.tcp_rmem='1024 4096 16384'
	sysctl -w net.ipv4.tcp_wmem='1024 4096 16384'
	sysctl -w net.core.rmem_max=16384
	sysctl -w net.core.wmem_max=16384
	wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
	sudo dpkg -i erlang-solutions_1.0_all.deb