rentalcustard

public List<Foo> sort(List<Foo> foos) {
  return Collections.sort(foos, new Comparator<Foo>() {
    @Override
    public int compare(Foo a, Foo b) {
      //comparison logic
    }
  });
}

rentalcustard

require 'benchmark'

class PerfTest
  def with_inject(array)
    mapped_vals.inject(array, :<<)
  end

  def with_plus(array)
    array + mapped_vals
  end

rentalcustard

>> User.last.update_attributes(nil)
=> true

rentalcustard

class Doer {
  public void doStuff(Speaker speaker) {
    speaker.speak();
  }
}

interface Speaker {
  void speak();
}

rentalcustard

class MasterOfCeremonies { //I hate naming in potted examples
  public void handle(Dog dog) {
    dog.speak();
  }
}

class Dog {
  public void speak() {
    //something
  }

rentalcustard

class PrivacyExample
  def some_public_method
    self.some_private_method
  end

  def some_private_method
    "o hai"
  end
  private :some_private_method
end

rentalcustard

class CSVParser
  def initialize(line_handler=nil)
    @line_handler = line_handler
    @current_line = []
    @lines = []
  end

  def receive(chunk)
    #handle the chunk depending on state
    #if we detect end of line:

rentalcustard

class A
  B = Module.new

  def ieval(&block)
    instance_eval(&block)
  end
end

B = Module.new

rentalcustard

#!/bin/zsh
typeset -A files_by_sum
find $1 -maxdepth 1 | while read file; do
  if [ -f $file ]; then #don't look at directories
    sum=$(cat $file | md5sum | awk '{print $1}')
    current=${files_by_sum[$sum]}
    if [ $current ]; then
      rm $file
      ln -s $(basename $current) $file
    fi

rentalcustard

#What follows is an extremely contrived example of how this might
# look. Please don't pay attention to the incredibly naive JSON
# and HTML creation code, that's not supposed to be the point.

class Account
  def show_on(view)
    view.show_balance(self.balance)
    view.show_holder(self.holder_name)
    view.show_creation_date(self.created_at)
  end