rgs

Falsehoods programmers believe about prices

1. You can store a price in a floating point variable.
2. All currencies are subdivided in 1/100th units (like US dollar/cents, euro/eurocents etc.).
3. All currencies are subdivided in decimal units (like dinar/fils)
4. All currencies currently in circulation are subdivided in decimal units. (to exclude shillings, pennies) (counter-example: MGA)
5. All currencies are subdivided. (counter-examples: KRW, COP, JPY... Or subdivisions can be deprecated.)
6. Prices can't have more precision than the smaller sub-unit of the currency. (e.g. gas prices)
7. For any currency you can have a price of 1. (ZWL)
8. Every country has its own currency. (EUR is the best example, but also Franc CFA, etc.)

plentz

# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

danielstgt

#!/bin/bash
if [ "$EUID" -ne 0 ]
  then echo "Please run as root"
  exit
fi

apt-get install pkg-config libmagickwand-dev -y
cd /tmp
wget https://pecl.php.net/get/imagick-3.4.4.tgz
tar xvzf imagick-3.4.4.tgz

LostKobrakai

defmodule NestedWeb.FormLive do
  use NestedWeb, :live_view
  require Logger

  defmodule Form do
    use Ecto.Schema
    import Ecto.Changeset

    embedded_schema do
      field :name, :string

junian

# This code is based on tutorial by slicktechies modified as needed to use oauth token from Twitch.
# You can read more details at: https://www.junian.net/2017/01/how-to-record-twitch-streams.html
# original code is from https://slicktechies.com/how-to-watchrecord-twitch-streams-using-livestreamer/

import requests
import os
import time
import json
import sys
import subprocess

tomhicks

/*
Copy this into the console of any web page that is interactive and doesn't
do hard reloads. You will hear your DOM changes as different pitches of
audio.

I have found this interesting for debugging, but also fun to hear web pages
render like UIs do in movies.
*/

const audioCtx = new (window.AudioContext || window.webkitAudioContext)()

lizthegrey

default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'

anthonyholmes

// Alerts
@include alert-variant($background, $border, $text-color);

// Background Variant
@include bg-variant($parent, $color);

// Border Radius
@include border-top-radius($radius);
@include border-right-radius($radius);
@include border-bottom-radius($radius);

pnc

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

bsedat

FROM elixir:1.4.5 as asset-builder-mix-getter

ENV HOME=/opt/app

RUN mix do local.hex --force, local.rebar --force
# Cache elixir deps
COPY config/ $HOME/config/
COPY mix.exs mix.lock $HOME/
COPY apps/myproject_web/mix.exs $HOME/apps/myproject_web/
COPY apps/myproject_web/config/ $HOME/apps/myproject_web/config/