banister

# Ruby edge cases

# lambdas can no longer be used with instance_eval in Ruby 1.9.2
l = lambda { puts "hello world"! }
Object.instance_eval(&l) #=> invalid argument. This is due to the fact instance_eval now yields a value (the receiver) in 1.9

# module double inclusion
# module appear multiple times in inheritance chain
# behaviour of constants in class_eval
# Proc.new can create a proc from an implicit block

banister

# I want this method in ruby-core
def let
  yield
end

def fib(i)
  let do |n = 1, result = 0|
    if i == -1
      result
    else

banister

class Hello; end

Hello.singleton_class.class #=> Class

# So methods on Hello.singleton_class should be first looked up as instance methods on Class right?

class Class
  def hello
    puts "from Class"
  end

lsegal

require 'yard'

class Method
  def docstring
    @yard_cache ||= {}
    file = source_location[0]
    unless @yard_cache[file]
      YARD.parse(file)
      @yard_cache[file] = true
    end

banister

#include <stddef.h>
#include <stdio.h>

typedef struct mystruct {
  int x, y;
  double f;
  char * hello;
} mystruct;

void

banister

direc = File.dirname(__FILE__)

require "#{direc}/local_eval/version"
require 'remix'
require 'object2module'

module LocalEval
  module ObjectExtensions
    @@m = Mutex.new
    def local_eval(*objs, &block)

banister

# Traits in Ruby:

module M
  def self.included(c)
    c.class_eval do
      instance_methods.each do |m|
        alias_method m, m
      end
    end
    c.uninclude(self)

banister

### Defining some Moose-like functionality
class Module
  def has(options)
      options.each_pair do |k, v|
        singleton_class.send(:attr_accessor, k)
        self.send("#{k}=", v)
    end
  end
  
  def after(meth, &after_block)

banister

# Perl Moose example in Ruby, Perl code found here: http://www.perlmonks.org/?node_id=656019

class Module
  # has and after do not exist in Ruby OOTB, so we define them here:
  def has(options)
      options.each_pair do |k, v|
        singleton_class.send(:attr_accessor, k)
        instance_variable_set("@#{k}", v)
    end
  end

osdezwart

=begin
/***************************************************************************
 *   Copyright (C) 2006, Paul Lutus                                        *
 *   Copyright (C) 2008, Antono Vasiljev                                   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *