shu0115

brew uninstall openssl
brew uninstall curl-ca-bundle
brew uninstall readline

thelibrarian

The Problem

If you have installed the standalone Command Line Tools for XCode on your Mac (i.e. without having XCode.app installed), some of these tools can get a bit confused due to a couple of oversights on Apple's part in finalising the setup.

Note: all commands below will need to be run from an Administrator account, or by an account with appropriate permission in /etc/sudoers.

The Solution

1. Failing to Find Frameworks

Sometime when compiling against the preinstalled Frameworks (e.g. Ruby or Python), various tools will inexplicable fail to find header files that are quite clearly there. This is caused by the fact that no XCode has been selected for the command-line tools. Wait, I hear you cry, I don't have XCode installed! Indeed, but you nonetheless need to select one, and point it somewhere where the command line tools exist, like so

jobwat

#!/bin/bash

# inspired from: https://gist.github.com/vitobotta/2783513

threshold=300 # after 5min of uptime, a job is considered 'stuck', to kill
logfile=log/dead_workers_killed.log

function ps_etime_to_seconds() # cheers user000001 - http://stackoverflow.com/questions/14652445/parse-ps-etime-output-into-seconds#14653443
{
  echo $1 | awk -F $':' -f <(cat - <<-'EOF'

dqminh

require "rspec/core/formatters/progress_formatter"

class ApplauseFormatter < RSpec::Core::Formatters::ProgressFormatter
  def initialize(output)
    super(output)
    unless File.exists? "/tmp/applause.mp3"
      p "Downloading applause for awesomeness"
      system "wget http://www.soundjay.com/human/applause-1.mp3 -O /tmp/applause.mp3"
    end
  end

jcoglan

require 'json'

class JsonFormatter
  METHODS = %w[start close stop start_dump dump_pending dump_failures dump_summary]
  METHODS.each { |m| define_method(m) { |*a| } }

  def initialize(out)
    @output    = out
    @event_id  = 0
    @passed    = true

bkeepers

def dress(dog_or_dogs)
  dressed_dogs = Array(dog_or_dogs).map {|dog| DogSweater.new(dog) }
  dog_or_dogs.respond_to?(:each) ? dressed_dogs : dressed_dogs.first
end

one_dog = dress(Dog.new)
all_my_dogs = dress([Dog.new, Dog.new, Dog.new])

rafer

# coding: utf-8

# Can ruby have method names have newlines/be crazy?

class BadKitty
  FACE = "
    |\\_/|
   / @ @ \\
  ( > º < )
   `>>x<<´

bokmann

# Thee will be more information here when I share the entire problem space I'm working on, but
# in short, this is preview material for my second talk in a series called "What Computer Scientists Know".
# The first talk is on recursion, and goes through several examples., leading up to a problem based
# on a simple puzzle that initial estimates based on performance of a previous puzzle would take years
# to solve on modern computers with the techniques shown in Ruby. That sets the stage for improving the
# performance of that problem with threading, concurrency, and related tuning.
#
# The second talk is on threading and concurrency, touching on algorithmic performance as well.
# Using some knowledge of the problem (board symmetry, illegal moves, etc), we reduce the problem space
# to about .5% of what we initially thought it was.  Still, the initial single threaded solution took more

dhh

# Original Rails controller and action
class EmployeesController < ApplicationController
  def create
    @employee = Employee.new(employee_params)
    
    if @employee.save
      redirect_to @employee, notice: "Employee #{@employee.name} created"
    else
      render :new
    end

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm