h3h

class Hash
  # Intersection on hash keys (and values) that actually returns a Hash.
  # The RHS can be an Array or a Hash.
  #
  # == Examples:
  #  >> hsh = {:banana => "elephant", :bar => "foo", :baz => "wuux"}
  #  >> hsh & [:bar]
  #  => {:bar=>"foo"}
  #
  #  >> hsh & {:bar => "foo", :baz => "wuux"}

h3h

require 'active_support/core_ext/hash/keys'

# Intended as an extension for an ActiveRecord model. It allows construction
# of a valid ActiveRecord object from a Hash, including proper handling of
# the :id attribute.
module ActiveRecordFromHash

  def from_hash(hsh)
    hsh = hsh.symbolize_keys
    self.new.tap do |obj|

h3h

[user]
	name = Brad Fults
	email = [email protected]
[alias]
	amend = commit --amend
	co = checkout
	st = status
	cp = cherry-pick

	# edit config (global, local)

h3h

>> class Foo
 >   def bar; 1 end
 >   alias_method :baz, :bar
 >   end
=> Foo  

>> class FooTwo < Foo
 >   def bar; 2 end
 >   end
=> nil  

h3h

ids = (1..1_000_000).to_a; nil
x = rand(1_000_000)

Benchmark.realtime do
  10.times do
    ids.to_set.include?(x)
  end
end
# => 14.3837828636169

h3h

>> class MyArray < Array; end
=> nil  

>> a = MyArray.new([1,2,3])
=> [1, 2, 3]  

>> a.class
=> MyArray  

>> a.reject {|x| x > 2}.class

h3h

$ whois apple.com

Whois Server Version 2.0

Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.

APPLE.COM.WWW.BEYONDWHOIS.COM
APPLE.COM.WAS.PWNED.BY.M1CROSOFT.COM

h3h

irb(main):033:0> stats = lambda { TokyoTyrantHandle.connection.current_connection.stat.split("\n").map {|i| vs=i.split("\t"); [vs[0] => vs[1]] }.flatten.inject({}) { |a,s| a.merge(s.keys.first => s.values.first) }.values_at('cnt_get', 'cnt_fwmkeys', 'cnt_put', 'cnt_out').map(&:to_i) }; res = 10.times.map { sleep 10; stats.call }
=> [[1414054383, 267722854, 668732970, 113985517], [1414055664, 267724365, 668733951, 113986564], [1414057054, 267725847, 668734993, 113987897], [1414058401, 267727235, 668735983, 113988827], [1414059735, 267728810, 668736976, 113989342], [1414061000, 267730358, 668737930, 113989818], [1414062189, 267731965, 668738915, 113990122], [1414063283, 267733524, 668739810, 113990639], [1414064276, 267734965, 668740685, 113990822], [1414065384, 267736397, 668741558, 113991083]]

irb(main):038:0> pp res.each_cons(2).map {|set_a, set_b| (0..3).map {|i| (set_b[i] - set_a[i]) / 10.0}}[[128.1, 151.1, 98.1, 104.7], [139.0, 148.2, 104.2, 133.3],
 [134.7, 138.8, 99.0, 93.0],
 [133.4, 157.5, 99.3, 51.5

h3h

#!/usr/bin/env bash

BUNDLER_BIN_PATH=""

# see BUNDLE_BIN is set in the current directories .bundle/config
if grep BUNDLE_BIN .bundle/config >/dev/null 2>/dev/null
  then
  BUNDLER_BIN_PATH=$(grep BUNDLE_BIN .bundle/config | cut -d ' ' -f 2 -)
  # Expand the bundler stub path
  eval BUNDLER_BIN_PATH=$BUNDLER_BIN_PATH

h3h

  POSSIBLE_OPTIONS = "[misxp]"
  def rubify_regexp(l)
    re = l.gsub(/\(\?(#{POSSIBLE_OPTIONS}*)(?:-(#{POSSIBLE_OPTIONS}*))?:/) do |_|
      enabled = $1
      disabled = $2

      # Perl's `s` option is `m` in Ruby
      if enabled.include?('s') && !enabled.include?('m')
        enabled.sub!('s', 'm')
      else