smsohan

#Instead of the following
Mail::Configuration.instance.retriever_method :pop3, pop3_options_hash

Mail.all.each do |mail|
...
end

#I would like to write one of the following

#1. The following line will instantiate a receiver using the global config

smsohan

#You have seen something like this, if null replace with a blank array
an_array = (another_array || [] ) + (yet_another_array || [])


#But you could do this as well
an_array = another_array.to_a + yet_another_array.to_a

#Or you have seen this
an_array = another_array + (an_element_or_array.is_a?(Array) ? an_element_or_array : [an_element] )

smsohan

#the new tap method of ruby will always return itself, but lets you play with!
data = (1..10).to_a
data.tap{|x| print x}.to_a.join(', ')
p


#alias will redirect method calls to method with a different name, useful for api changing
class SomeClass  
  def new_method(x)
    p "The value is #{x}"

smsohan

#the new tap method of ruby will always return itself, but lets you play with!
data = (1..10).to_a
data.tap{|x| print x}.to_a.join(', ')
p


#alias will redirect method calls to method with a different name, useful for api changing
class SomeClass  
  def new_method(x)
    p "The value is #{x}"

smsohan

Which version is more readable?

    [Flags]
    public enum HttpVerbs {
        Get = 1 << 0,
        Post = 1 << 1,
        Put = 1 << 2,
        Delete = 1 << 3,
        Head = 1 << 4
    }

smsohan

-- Build text string
set s to "<li>"
tell application "NetNewsWire"
	set s to s & "<a href=\"" & (URL of selectedHeadline) & "\">"
	set s to s & (title of selectedHeadline) & "</a>"
	set s to s & (creator of selectedHeadline)
end tell
set s to s & "</li>"

-- Set the contents to the ClipBoard

smsohan

#light
open System

type Game()=

    member this.NewScore(winnersScore, othersScore)=
        match winnersScore with
        |"0"    -> "15", othersScore
        |"15"   -> "30", othersScore
        |"30"   -> "40", othersScore

smsohan

class Weather
  attr_accessor :temperature, :humidity

  def initialize another_weather
     self.temperature = another_weather.temperature
     self.humidity = another_weather.humidity
  end
end

smsohan

#example_code
def search(query, page_number)
  third_party_search_library.search("*{query}*").from(page_number * page_size).size(page_size).matched_results
end

#example_unit_test
it "should search for partial match and return paged result" do
  third_party_search_library.should_receive(:search).with('*new york*').and_return(cities)
  cities.should_receive(:from).with(40).and_return(cities)
  cities.should_receive(:size).with(20).and_return(cities)

smsohan

module MyModule
  def self.included base
    included_classes << base unless included_classes.include?(base)
  end
  
  def self.included_classes
    @@included ||= []
  end
end