alindeman

On Fri, Dec 7, 2012 at 10:10 AM, tim ruffles <timruffles@googlemail.com> wrote:
> Just ignore any mention of Cucumber (unless you're working with the mythical .feature file writing/reading client).

I agree that a newbie should ignore cucumber. I teach my pairing clients the same way.

But this is a meme that just annoys me, because it's BS. And not only that, the most prominent people repeating it *tend* to be people who are out of touch with client work. (Not referring to you here, but to some of the louder voices behind the "mythical client" meme.) There absolutely are clients who write cucumber, or something very close to cucumber, or who sit with a developer and collaborate to write an English description of their needs which can then serve as an automated acceptance test.

But the bigger problem with this meme is that it's a strawman. Cucumber, and the BDD ideas it comes out of, are about *establishing common language among ALL stakeholders*. This may not mean between client and developer. I worked on o

alindeman

class Foo
  def bar
    "wtf?"
  end
  protected :bar

  def invoke_bar
    public_send(:bar)
  end
end

alindeman

1.8.7 :001 > proc { |a| p a }.call(1, 2)
(irb):1: warning: multiple values for a block parameter (2 for 1)
	from (irb):1
[1, 2]

1.9.3-p286 :001 > proc { |a| p a }.call(1, 2)
1

alindeman

class Age
  def self.for_date_of_birth(dob, today = Date.today)
    # http://stackoverflow.com/a/11942/445124
    diff = today.strftime("%Y%m%d").to_i - dob.strftime("%Y%m%d").to_i
    diff / 10000
  end
end

alindeman

class Age
  def self.for_date_of_birth(dob, today = Date.today)
    # http://stackoverflow.com/a/11942/445124
    diff = today.strftime("%Y%m%d").to_i - dob.strftime("%Y%m%d").to_i
    diff / 10000
  end
end

alindeman

jruby-1.6.8 :001 > require 'tmpdir'
 => true 
jruby-1.6.8 :002 > Dir.mktmpdir { }
Errno::EACCES: Permission denied - /tmp/d20121014-5917-19xh1jk/.
	from org/jruby/RubyFile.java:478:in `initialize'
	from org/jruby/RubyIO.java:1135:in `open'
	from /home/travis/.rvm/rubies/jruby-1.6.8/lib/ruby/1.8/fileutils.rb:699:in `remove_entry_secure'
	from /home/travis/.rvm/rubies/jruby-1.6.8/lib/ruby/1.8/tmpdir.rb:131:in `mktmpdir'
	from (irb):2:in `evaluate'
	from org/jruby/RubyKernel.java:1112:in `eval'

alindeman

1.9.3p194 :001 > 1==1?"one":"not one"
 => "one" 
1.9.3p194 :002 > def one
1.9.3p194 :003?>   1
1.9.3p194 :004?>   end
 => nil 
1.9.3p194 :005 > 1==one?"one":"not one"
SyntaxError: (irb):5: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '('
1==one?"one":"not one"
1.9.3p194 :006 > 1==one ? "one":"not one"

alindeman

1.9.3p194 :010 > :"testing#{10+9}"
 => :testing19
1.9.3p194 :011 > objects = ObjectSpace.each_object(String).to_a
 => [...]
1.9.3p194 :012 > objects.include?("testing19")
 => true

alindeman

; me
(defn check-sum [sequence]
  (reduce + (map * (cycle [1 3]) sequence)))

; fp-oo
(def check-sum
     (fn [sequence]
       (apply + (map (fn [position digit]
                       (* digit (if (odd? position) 1 3)))
                     (range 1 (inc (count sequence)))

alindeman

[ruby] irb
2.0.0dev :001 > %w(abc def)
 => ["abc", "def"] 
2.0.0dev :002 > %i(abc def)
2.0.0dev :003?>