acook

module Enumerable
  # operates like Enumerable#map, but returns a hash
  def hmap
    inject Hash.new do |new_hash, (k,v)|
      new_k, new_v = yield k, v
      new_hash[new_k] = new_v
      new_hash
    end
  end
end

acook

# If DKMS isn't installed then VBox will erroneously complain about missing headers.
sudo apt-get install build-essential dkms libglib2.0-0 linux-headers-$(uname -r)
# Only needed if the system doesn't automount the image:
#sudo mount /dev/cdrom /media/cdrom
# Some systems automount on `/media`, others on `/media/cdrom*` which is symlinked to `/media/cdrom`.
# Don't `cd` into these directories until you're sure the image is mounted.
cd /media ; cd cdrom
# Need root privs in order to place and activate kernel modules.
sudo sh VBoxLinuxAdditions.run

acook

module Stuff
  def an_instance_method
    puts "Stuff's instance method!"
  end

  def self.an_eigenclass_method
    puts "Stuff's eigenclass method!"
  end

  module_function

acook

Binary Data

It can be challenging to use Ruby for handling raw binary data, involving a lot of Array#pack and String#unpack with the possibility of String#ord and Numeric#chr for good measure. Some of these tools might make the job a bit easier, allowing your to define schemas of the binary data and how to parse it, or even just allowing your to specify the format in a more verbose way.

Gems

BinData

acook

# starting daemon
$ gnome-keyring-daemon -s --components=pkcs11,secrets,ssh,gpg
gnome-keyring-daemon: insufficient process capabilities, unsecure memory might get used
** Message: couldn't access conrol socket: /home/xybre/.cache/keyring-My42JI/control: No such file or directory
$ git fetch
WARNING: gnome-keyring:: couldn't connect to: /home/xybre/.cache/keyring-My42JI/pkcs11: No such file or directory

$ touch /home/xybre/.cache/keyring-My42JI/control
touch: cannot touch `/home/xybre/.cache/keyring-My42JI/control': No such file or directory   

acook

if defined?(Rubinius) then
  require_relative 'rbx_caller_binding'
else
  require_relative 'mri_caller_binding'
end

acook

class ServerThing
  def initialize session
    @session = session # primary parameters
  end
  
  def for type, session
    self.class.const_get("#{type.to_s.capitalize}Class").new_with self, ServerThing::Session.new(session)
  end
  
  class SuperClassForObjects

acook

My modified fork of agnoster.zsh-theme

A ZSH theme optimized for people who use:

• Solarized
• Git
• Unicode-compatible fonts and terminals (I use iTerm2 + Menlo)

Compatibility

acook

my_dict = { foo: 1, bar: 'baz' }

my_clone = my_dict.dup                  #=> making a shallow copy

my_clone.object_id == my_dict.object_id #=> false, these are different objects
my_clone == my_dict                     #=> true, they contain the same values

my_clone[:qux] = 'wibble'               #=> adding a pair to the clone
my_clone.has_key? :qux                  #=> true, the key was added
my_dict.has_key? :qux                   #=> false, the key was never added to this object, neither was its value

acook

    Black: 0, 0, 0
    Red: 229, 34, 34
    Green: 166, 227, 45
    Yellow: 252, 149, 30
    Blue: 196, 141, 255
    Magenta: 250, 37, 115
    Cyan: 103, 217, 240
    White: 242, 242, 242