snuxoll

# Mixin to scan an array for objects that respond to a given method
module WithMethod

  # Iterates through the array and returns a list of items that
  # respond to method
  def with_method(method)
    select { |item| item.respond_to? method }
  end

end

snuxoll

def add(num1)
  lambda { |num2| num1 + num2 }
end

add(2).call(2) # returns 4

snuxoll

require 'rubygems'
require 'hpricot'

doc = Hpricot( File.open("file.html") )
(doc / "span.foo").each do |span|
  span.swap("***#{span.inner_html}***")
end

snuxoll

# Create a new hash and extend it with our CollectKeyValue
# module
hash ={
  "key_1"=>"one",
  "key_2"=>"two",
  "key_3"=>"three",
  "key_4"=>"four"
}.extend(CollectKeyValue)

# Now lets call our new hash#collect_kv method and rename

snuxoll

# Module containing a collect_kv method to allow
# a new hash to be generated my collect instead
# of returning an array of modified keys or values
module CollectKeyValue

  # Takes a block that returns a [key, value] pair
  # and builds a new hash based on those pairs
  def collect_kv
    result = {}
    each do |k,v|

snuxoll

Merb::Config.use do |c|
  c[:use_mutex] = false
  # Setup the session store, require the safe_session extension to
  # generate a unique salt for the application if one does not
  # already exist
  c[:session_store] = 'cookie'
  require File.join(Merb.root, "merb/extensions/safe_session.rb")
  safe_session = SafeSession.new
  c[:session_secret_key]  = safe_session.salt
  c[:session_id_key] = '_irsea_session_id'

snuxoll

# Safe session extension for merb applications.  Generates a
# unique session salt for an application install automatically
# instead of requiring the user to do so themselves.
class SafeSession
  
  require "digest/sha1"
  attr_reader :salt
  
  # Attempts to load the session salt from the saltfile, if it does
  # not exist a new salt is generated