mikeauclair

require 'ruby-prof'

def profile_as(name)

  if ENV['PROFILE']

    RubyProf.start
    yield

    result = RubyProf.stop

mikeauclair

± ./node_modules/.bin/flow check                                                                                               039efe8|add_more_types*

test.js:18
 18: getQQ().then(function(val){
             ^^^^ property `then`. Property not found in
 18: getQQ().then(function(val){
     ^^^^^^^ Array


Found 1 error

mikeauclair

describe('example', function() {

  beforeEach(function(){

    var scheduler = this.scheduler = new Rx.TestScheduler();
    this.userEmails = this.scheduler.createHotObservable(
      Rx.ReactiveTest.onNext(
        210, 
        {email: 'bob@bob.com'}
      ),

mikeauclair

Keybase proof

I hereby claim:

• I am mikeauclair on github.
• I am mikeauclair (https://keybase.io/mikeauclair) on keybase.
• I have a public key whose fingerprint is 783C 1A28 9EE3 A88F BE4C 0FFB E2C7 0FC4 D157 FFB3

To claim this, I am signing this object:

mikeauclair

#!/usr/bin/env ruby

require 'benchmark'

REGEXPS = [
  /^no such file to load -- (.+)$/i,
  /^Missing \w+ (?:file\s*)?([^\s]+.rb)$/i,
  /^Missing API definition file in (.+)$/i,
  /^cannot load such file -- (.+)$/i,
]

mikeauclair

1977

• The Clash - The Clash
• Elvis Costello - My Aim Is True
• The Jam - In the City
• The Jam - This Is the Modern World
• Wire - Pink Flag

1978

• The Clash - Give 'Em Enough Rope
• Elvis Costello & The Attractions - My Aim Is True

mikeauclair

(define person (lambda (first last) 
	(define setFirst (lambda (value) (set! first (list-ref value 0))))
	(define setLast (lambda (value) (set! last (list-ref value 0))))
	(lambda (method . args)
		(case method
			('first 
				(if (null? args)
					first
					(setFirst args)
				)

mikeauclair

Easy steps for CPU profiling a Rails app

1. add ruby-prof to your gemfile (https://github.com/ruby-prof/ruby-prof)
2. grab kcachegrind or qcachegrind (brew install qcachegrind graphviz on os x)
3. plop development_profiler.rb in lib in your app
4. wrap your questionable code in a prof block
5. open the file in qcachegrind (It'll live in tmp/performance in your app)

mikeauclair

class Account
#blahblah
  def external_management
    if appdirect?
      @external_management ||= OpenStruct.new(:user_url => 'blah', :accont_url => 'blah')
    end
  end
#blahblah
end

mikeauclair

class ActiveRecord::Base
  mattr_accessor :shared_connection
  @@shared_connection = nil

  def self.connection
    @@shared_connection || retrieve_connection
  end
end
ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection