Everaldo Gomes everaldo

Disclaimer: The following examples try to give an overview of the process followed in different scenarios. Some commands were actually written from memory. Some tools might exist simplifying all this. Furthermore, I'm no expert so if anyone ever reads this and knows any improvement, please let me know.

Case 1: Direct access to Pairing Station

Given that the Guest User can access the Pairing Station directly, either because the station is publicly available or because NAT port forwarding can be used, there's only one thing we need to do, give ssh access to the Guest User by adding his ssh public key to our Local User (pair) .ssh/authorized_keys file.

The local user would open up a tmux session with

tmux new-session -s pairing

Concept

(The blockquote style does not look so well so I just pasted directly, but these are all quoted from the links in the bottom of this page)

You should not implement to_str unless your object acts like a string, rather than just having a string representation. The only core class that implements to_str is String itself.

[to_i and to_s] are not particularly strict: if an object has some kind of decent representation as a string, for example, it will probably have a to_s method… [to_int and to_str] are strict conversion functions: you implement them only if you object can naturally be used every place a string or an integer could be used.

to_str is used by methods such as String#concat to convert their arguments to a string. Unlike to_s, which is supported by almost all classes, to_str is normally implemented only by those classes that act like strings. Of the built-in classes, only Exception and String implement to_str

Webpack with Rails Part 1

I don't like Sprockets, but it's the easiest and best choice for lots of Ruby on Rails projects. When looking for a better way to manage my JavaScript assets and an improved developer story, my current tool of choice is webpack. While I wish Rails supported drop-in asset pipelines the way that Phoenix does, it's not hard to use webpack with Rails.

Upload images with React and the carrierwave Ruby gem for Rails 5

I recently attended a 4.5 month, intensive coding bootcamp in Boston, MA called Launch Academy. I spent a lot of time in academic science doing imaging research, so I naturally had an interest in learning how to manipulate images in this new web browser environment. For my capstone project, I created a very simple image editing Rails app where I realized I needed to be able to save/upload images to my database.

Since, through earnest effort, I wanted my app to use React for a single-page experience, and I quickly discovered that my desire to use a React/fetch/carrierwave/fog/Rails strategy was initially difficult to learn. I had to pull information from many sources (StackOverflow, Medium, official docs, other blog posts, course instructors, etc) to develop a method that uses this specific POSTing cycle.

This blog post represents my findings to integrate all these technologies in a modern, seamless

	#!/bin/bash

	set -e

	### BEGIN INIT INFO
	# Provides: unicorn
	# Required-Start: $all
	# Required-Stop: $network $local_fs $syslog
	# Default-Start: 2 3 4 5
	# Default-Stop: 0 1 6

	colors = ['Red', 'Blue', 'Green', 'Yellow', 'Black']

	states = ['Andhra', 'Karnataka', 'TamilNadu', 'Kerala']

	neighbors = {}
	neighbors['Andhra'] = ['Karnataka', 'TamilNadu']
	neighbors['Karnataka'] = ['Andhra', 'TamilNadu', 'Kerala']
	neighbors['TamilNadu'] = ['Andhra', 'Karnataka', 'Kerala']
	neighbors['Kerala'] = ['Karnataka', 'TamilNadu']

	public static int lighten(int color, double fraction) {
	int red = Color.red(color);
	int green = Color.green(color);
	int blue = Color.blue(color);
	red = lightenColor(red, fraction);
	green = lightenColor(green, fraction);
	blue = lightenColor(blue, fraction);
	int alpha = Color.alpha(color);
	return Color.argb(alpha, red, green, blue);
	}

	=begin

	Include in your rspec config like so:

	RSpec.configure do \|spec\|
	spec.include RSpec::RedisHelper, redis: true
	end

	This helper will clean redis around each example.
	=end

	#!/usr/bin/env ruby

	#
	# Passenger Process Monitor
	#
	# By Darren Oakley
	# Based heavily on a script by James Smith (https://gist.github.com/851520)
	# That in turn was based on a similar script by Jon Bettcher
	#
	# - Check memory usage of all paseenger child process and kill if grows too large.

	# ...

	gem 'carrierwave'
	gem 'fog', '~> 1.0.0' # Need to specify version, as carrierwave references older (0.9.0) which doesn't allow configuration of Rackspace UK Auth URL