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Jacob Atzen jacobat

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  • Copenhagen, Denmark
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@jacobat
jacobat / global_hash_fetch.rb
Created July 13, 2014 07:29
What's going on here?
$a = {}
3.times do
$a.fetch(:key) { puts "Fetch :key" ; :b }
end
@jacobat
jacobat / hexagonal_controller.rb
Created July 3, 2014 20:39
Hexagonal Ruby controllers
class Result
def success(&blk)
@success = blk
end
def succeeded
@success.call
end
def failure(&blk)
@jacobat
jacobat / huskeliste.md
Created January 16, 2014 20:15
Skiturshuskeliste

Papirer + penge

  • Pas
  • Rejsepapirer

Skitøj

  • Handsker
  • Skiundertøj
  • Skipulli
@jacobat
jacobat / -
Created January 13, 2014 14:19
Routing with etcd
-----------------
A site has the following structure:
/name
/current_revision => [revision]
/nodes
/[revision]
/[nodename] => [url]
@jacobat
jacobat / shell1
Created January 12, 2014 18:27
First shell1 - build, run, and change a running container Then shell2 - commit and enter new container
jacob@sales01:~/timebuild$ cat Dockerfile
FROM ubuntu
ADD . /foo
jacob@sales01:~/timebuild$ sudo docker build -t commitbuild .
Uploading context 10.24 kB
Uploading context
Step 1 : FROM ubuntu
---> 8dbd9e392a96
Step 2 : ADD . /foo
---> d4e96c9ed83a
@jacobat
jacobat / email_address_validator.rb
Created January 7, 2014 10:36
# From http://my.rails-royce.org/2010/07/21/email-validation-in-ruby-on-rails-without-regexp/
require 'mail'
class EmailAddressValidator < ActiveModel::EachValidator
def validate_each(record, attribute, value)
begin
m = Mail::Address.new(value)
# We must check that value contains a domain and that value is an email address
r = m.domain && m.address == value
t = m.__send__(:tree)
@jacobat
jacobat / gist:8281990
Created January 6, 2014 12:13
forum_table = Forum.arel_table
User.where(:id => forum_table.project('user_id').where(forum_table['id'].eq(3)))
@jacobat
jacobat / Machine 1
Created December 22, 2013 12:07
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin13.0]
>> machine_bytes = ['foo'].pack('p').size
=> 8
>> machine_bits = machine_bytes * 8
=> 64
>> machine_max_signed = 2**(machine_bits-1) - 1
=> -9223372036854775809
>> machine_max_unsigned = 2**machine_bits - 1
=> -1
@jacobat
jacobat / error_backend.rb
Last active December 31, 2015 12:19
module I18n
module Backend
class Error
include Base
def lookup(locale, key, scope = [], options = {})
case key
when /missing/
nil
when /count/
@jacobat
jacobat / gist:7776893
Created December 3, 2013 20:23
bundle install --verbose
Fetching from: http://rubygems.org/api/v1/dependencies
HTTP Redirection
Fetching from: http://bundler.rubygems.org/api/v1/dependencies
HTTP Success
Fetching source index from http://rubygems.org/
Fetching from: http://rubygems.org/quick/Marshal.4.8/piet-0.1.0.gemspec.rz
HTTP Redirection
Fetching from: http://bb-m.rubygems.org/quick/Marshal.4.8/piet-0.1.0.gemspec.rz
HTTP Success
Fetching from: http://rubygems.org/quick/Marshal.4.8/rake-10.1.0.gemspec.rz