Burak andreyuhai

How to get the difference of two arrays in an Ecto fragment?

You might want to get the difference between two arrays to update a row in Postresql, in your Elixir/Phoenix app. Here I explain how to do it.

SELECT
  coalesce(
    (
      SELECT

Source

When you download the latest version of vim-airline as .zip and unzip it to a temporary directory, you get a vim-airline-master directory in the temp directory. Inside vim-airline-master you'll find autoload, doc and plugin directories.

You should either copy these three directories to your ~/.vim/ if they don't yet exist (don't overwrite existing directories with same names!) or copy the contents of the aforementioned three directories to existing directories under ~/.vim/

How to use unicode glyphs in i3 status bar?

Source

Install font awesome

sudo apt-get install fonts-font-awesome

How to increase and decrease the backlight on Lenovo Z500 with Ubuntu 20.04

Source

Open /etc/default/grub
Change

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to

TP Link Archer T2U

To be able to install drivers on Ubuntu 20.04, use this repo:

https://github.com/aircrack-ng/rtl8812au

A related question

Ruby Mechanize Debug Request Headers

If you are trying to debug your headers:

Start listening on some port:

nc -kl 1234

Then just send a request to that port:

	defmodule StableMarriageProblem do
	@moduledoc """
	Implements the algorithm for stable marriage problem.
	"""

	@type person_id :: integer()

	# Denotes a preference list for a single person
	@type preference_list :: [person_id(), ...]

	source $VIMRUNTIME/defaults.vim

	set nocompatible " be iMproved, required
	filetype off " required

	" set the runtime path to include Vundle and initialize
	set rtp+=~/.vim/bundle/Vundle.vim
	call vundle#begin()
	" alternatively, pass a path where Vundle should install plugins
	"call vundle#begin('~/some/path/here')

	<%= form_for @changeset, @action, fn f -> %>
	<h3>Type</h3>
	<%= select f, :type, @pizza_types %>
	<%= error_tag f, :type %>

	<div class="form-group">
	<h3>Extras</h3>
	<%= for extras <- inputs_for(f, :extras) do %>
	<%= for extra <- @extras do %>
	<div>

	# LUNARLOGIC.IO PROGRAMMING TASK

	# Imagine we are organizing a Lunar dinner.
	# 30 people have confirmed that they will come.
	# We will all be seating at five 6-person tables (A, B, C, D, E, respectively).
	# There will be 3 courses. After each course we'll change our seats.
	# We'd like every person to sit with as many different people as possible throughout the dinner.
	# As a bonus you may think of future similar occasions where different number of people and tables may be available.

	# Write a program that would assign 30 people to their seats (A1, A2, A3, etc., up to E6) during each course with that goal in mind.