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    # 004
    sorted_rates = rates.select { |rate| rate.from != 'USD' }.
                         sort   { |a, b| a.from <=> from_cur }.
                         map    { |rate| [rate] }
    
    # Split the select into two? less efficient but "single responsibility" ?
    all_paths(sorted_rates).select { |rates_arr| rates_arr.first.from == from_cur && rates_arr.last.to == 'USD' }.
                            sort   { |a, b| a.length <=> b.length }.
                            first
    

gstark

module ActiveRecord
  class Base
    # Define a method that can be called on an ActiveRecord::Base class
    # or on a Scope object. This will call the db-adapters select_and_yield
    # to perform the query and yield back each row found. Each row is then
    # instantiated into an object and yielded to the caller.
    def self.yield_all(*args)
      raise "Must supply block" unless block_given?

      options = args.extract_options!

gstark

How to expand a volume

  1) Add new disk to the VM
  2) Ensure it shows up as a device
  3) fdisk /dev/____
  4) add a partition (primary?)
  5) sudo pvcreate /dev/____
  6) sudo pvs # get name of volume group
  7) sudo vgextend NAME_OF_VOLUME_GROUP /dev/____
  8) sudo lvextend -l+100%FREE /dev/NAME_OF_VOLUME_GROUP/root

gstark

module ActiveRecord
  class Base
    class << self
      delegate :pluck, :ids, :to => :scoped
    end
  end

  class CollectionProxy
    delegate :pluck, :ids, :to => :scoped
  end

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Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                            Version              Architecture         Description
+++-===============================-====================-====================-===================================================================
ii  accountsservice                 0.6.35-0ubuntu7.1    i386                 query and manipulate user account information
ii  acl                             2.2.52-1             i386                 Access control list utilities
ii  adduser                         3.113+nmu3ubuntu3    all                  add and remove users and groups
ii  apparmor                        2.8.95~2430-0ubuntu5 i386                 User-space parser utility for AppArmor
ii  apt                             1.0.1ubuntu2.1       i386                 commandline package manager

gstark

# Failure with xrandr when TearFree is enabled

xrandr -d :0 --output LVDS1 --off
xrandr -d :0 --output TV1 --off
xrandr -d :0 --output VIRTUAL1 --off
xrandr -d :0 --output VGA1 --off
xrandr -d :0 --output DVI1 --off
xrandr -d :0 --output VGA1 --mode 1920x1080 --refresh 60 --rotation normal
xrandr -d :0 --output DVI1 --mode 1920x1080 --refresh 60 --rotation normal
xrandr -d :0 --output DVI1 --right-of VGA1    # FAILS HERE with: “Configure crtc 1 failed”

gstark

+ xrandr -d :0 --output DVI1 --right-of VGA1
X: ../../../src/sna/kgem.c:4173: kgem_create_2d: Assertion `size && size <= kgem->max_object_size' failed.
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
      after 38 requests (38 known processed) with 0 events remaining.
      

[    42.911] 
X.Org X Server 1.15.1
Release Date: 2014-04-13
[    42.911] X Protocol Version 11, Revision 0

gstark

gstark

BIG_BEFORE="big before"
BIG_AFTER="big after"
GARBAGE="garbage"
REGEXP=/big /

$big_after_id = 0
$big_before_id = 0
$callable_id = 0

gstark

require "base64"
require "open-uri"

def url_to_terminal_image(url)
  raw_image = open(url).read
  encoded_image = Base64.encode64(raw_image).gsub(/[\n\r]/,'')
  "\033]1337;File=size=#{raw_image.length};inline=1:#{encoded_image}\a\n"
end