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Bitcoin for voksne

Bitcoin er en digital valuta, som ikke har nogen central autoritet. Det er en valuta hvor du ikke behøver at stole på nogen som helst for at vide at den er noget værd. Som begreb minder det meget om guld. Guld har en værdi i sig selv, i modsætning til en 100 kr seddel som kun har værdi hvis den danske stat siger den har værdi. På samme måde er ideen omkring Bitcoins at de har en værdi i sig selv.

Lad os prøve at forstå hvordan Bitcoin fungerer.

ESM modules in node: npm edition

The proposal you’re about to read is not just a proposal. We have a working implementation of almost everything we discussed here. We encourage you to checkout and build our branch: our fork, with the relevant branch selected. Building and using the implementation will give you a better understanding of what using it as a developer is like.

Our implementation ended up differing from the proposal on some minor points. As our last action item before making a PR, we’re writing documentation on what we did. While I loathe pointing to tests in lieu of documentation, they will be helpful until we complete writing docs: the unit tests.

This repo also contains a bundled version of npm that has a new command, asset. You can read the documentation for and goals of that comma

From time to time, Musk will send out an e-mail to the entire company to enforce a new policy or let them know about something that's bothering him. One of the more famous e-mails arrived in May 2010 with the subject line: Acronyms Seriously Suck:

There is a creeping tendency to use made up acronyms at SpaceX. Excessive use of made up acronyms is a significant impediment to communication and keeping communication good as we grow is incredibly important. Individually, a few acronyms here and there may not seem so bad, but if a thousand people are making these up, over time the result will be a huge glossary that we have to issue to new employees. No one can actually remember all these acronyms and people don't want to seem dumb in a meeting, so they just sit there in ignorance. This is particularly tough on new employees.

That needs to stop immediately or I will take drastic action - I have given enough warning over the years. Unless an acronym is approved by me, it should not enter the SpaceX glossary.

Deploying Phoenix on Dokku

Worked 2015-09-08 for Phoenix 1.0.1 on Dokku 0.3.25.

These instructions assume you've set up Dokku. If not, go find a tutorial for that part. My notes for setting it up on Digital Ocean.

On your local machine, in the app's repo

Create a Dokku app:

	class Application < Rails::Application
	# Initialize configuration defaults for originally generated Rails version.
	config.load_defaults 7.0

	# ensure that `update(files: [uploaded_file])` will append, not replace
	config.active_storage.replace_on_assign_to_many = false
	end

	# By Henrik Nyh <https://henrik.nyh.se> under the MIT license.

	class Enum
	class Switch
	def initialize(value_to_match_against, *values)
	@checked_values = values.map { \|v\| [ v, false ] }.to_h

	values.each do \|value\|
	define_singleton_method(value) { \|&block\|
	@checked_values[value] = true

	#!/usr/bin/env ruby

	require 'base64'
	require 'nokogiri'
	require 'uri'

	def main
	html = Nokogiri::HTML($stdin.read)
	inline_all_images(html)
	inline_all_css(html)

	defmodule EctoBatchStream do
	import Ecto.Query, only: [from: 1, from: 2]

	@batch_size 1000

	# Example:
	#
	# query = from u in MyApp.User, select: u.email
	# stream = EctoBatchStream.stream(MyApp.Repo, query)
	# stream \|> Stream.take(3) \|> Enum.to_list # => […]

	# if you want to render flamegraphs
	gem "stackprof", require: false # required by flamegraph
	gem "flamegraph", require: false