Sahil Gadimbayli gadimbaylisahil

In yesterday's post I said, in relation to "how does .present? work on ActiveRecord::Relation", I said that present? performs an existence check SELECT 1 AS one FROM ... LIMIT 1 because it calls exists? underneath. This is actually wrong - it loads the relation.

Jonathan Mast corrected me on Twitter. It turns out, I should have paid closer attention! Here is the actual implementation of blank? on ActiveRecord::Relation on Rails master:

# Returns true if relation is blank.
def blank?
  records.blank?
end

Introduction

This is about documenting getting Linux running on the late 2016 and mid 2017 MPB's; the focus is mostly on the MacBookPro13,3 and MacBookPro14,3 (15inch models), but I try to make it relevant and provide information for MacBookPro13,1, MacBookPro13,2, MacBookPro14,1, and MacBookPro14,2 (13inch models) too. I'm currently using Fedora 27, but most the things should be valid for other recent distros even if the details differ. The kernel version is 4.14.x (after latest update).

The state of linux on the MBP (with particular focus on MacBookPro13,2) is also being tracked on https://github.com/Dunedan/mbp-2016-linux . And for Ubuntu users there are a couple tutorials (here and here) focused on that distro and the MacBook.

Note: For those who have followed these instructions ealier, and in particular for those who have had problems with the custom DSDT, modifying the DSDT is not necessary anymore - se

Git Cheat Sheet

Basic commands

git init Creates a new git repository in the directory

git add <file name> Adds a specific file to staging

git add . or git add -A Adds the full directory and its contents to staging

Macbook Arch Guide

Installation
General Setup
System Time
Display
Keyboard
Touchpad
Sound
Bluetooth

	desc 'Find routes that will raise a routing error when requested'
	task unroutable_routes: :environment do
	# A lot of this code was taken from how `rake routes` works
	# https://github.com/rails/rails/blob/f95c0b7e96eb36bc3efc0c5beffbb9e84ea664e4/railties/lib/rails/commands/routes/routes_command.rb

	require 'action_dispatch/routing/inspector'

	unroutables = Rails.application.routes.routes.
	map { \|r\| ActionDispatch::Routing::RouteWrapper.new(r) }.
	reject { \|r\| r.internal? \|\| r.engine? \|\| r.path.starts_with?('/rails/') \|\| !r.controller }.

	#!/bin/bash
	#
	# Written by Chris Arceneaux
	# GitHub: https://github.com/carceneaux
	# Email: [email protected]
	# Website: http://arsano.ninja
	#
	# Note: This code is a stop-gap to erase Job Artifacts for a project. I HIGHLY recommend you leverage
	# "artifacts:expire_in" in your .gitlab-ci.yml
	#

	# Reference: https://www.exclamationlabs.com/blog/continuous-deployment-to-npm-using-gitlab-ci/

	# GitLab uses docker in the background, so we need to specify the
	# image versions. This is useful because we're freely to use
	# multiple node versions to work with it. They come from the docker
	# repo.
	# Uses NodeJS V 9.4.0
	image: node:9.4.0

	# And to cache them as well.

	# 1. First of all of course get Manjaro:
	https://manjaro.org/get-manjaro/

	# I recommend using Etcher to copy the image to your USB:
	https://etcher.io/

	# 2. Before installing make sure:
	# - Secure boot is disabled in BIOS
	# - Your SSD, HDD or NVME drive is set to AHCI instead of RAID
	# - Fastboot should be on Auto or minimal, but this shouldn't matter to much

	# gem install mechanize
	require 'mechanize'

	class Download

	def initialize(site, email, pass)
	@options = {site: site, email: email, pass: pass}
	end

	def call

	#!/bin/sh
	# Configure homebrew permissions to allow multiple users on MAC OSX.
	# Any user from the admin group will be able to manage the homebrew and cask installation on the machine.

	# allow admins to manage homebrew's local install directory
	chgrp -R admin /usr/local
	chmod -R g+w /usr/local

	# allow admins to homebrew's local cache of formulae and source files
	chgrp -R admin /Library/Caches/Homebrew