haileys

# Method instrumentation decorator with Ruby 2.1's new "method definition returns method name" feature

class Module
  def instrument(notification_name, mid)
    meth = instance_method(mid)
    define_method(mid) { |*args, &bk|
      ActiveSupport::Notifications.instrument(notification_name) do
        meth.bind(self).call(*args, &bk)
      end
    }

haileys

all: rust-for-rubyists.epub site

rust-for-rubyists.epub:
	pandoc --toc -S -s --epub-metadata=book/metadata.xml -o rust-for-rubyists.epub book/title.txt book/preamble.md book/chapter-*.md

site:
	pandoc -S -s book/preamble.md book/chapter-*.md -o book/book.html --include-before-body=book/header.html --include-after-body=book/footer.html
	pandoc -S -s book/chapter-01.md -o book/chapter-01.html --include-before-body=book/header.html --include-after-body=book/footer.html
	pandoc -S -s book/chapter-02.md -o book/chapter-02.html --include-before-body=book/header.html --include-after-body=book/footer.html
	pandoc -S -s book/chapter-03.md -o book/chapter-03.html --include-before-body=book/header.html --include-after-body=book/footer.html

haileys

/************************************************

  eval.c -

  $Author: matz $
  $Date: 1996/12/25 08:54:45 $
  created at: Thu Jun 10 14:22:17 JST 1993

  Copyright (C) 1993-1997 Yukihiro Matsumoto

haileys

class Module
  def dispatch(*klasses, last)
    last_klass, mid = last.first
    klasses << last_klass
    __dispatch_list << [klasses, instance_method(mid)]
    define_method(mid, __dispatch_proc(__dispatch_list)) 
  end

  def __dispatch_list
    @__dispatch_list ||= []

haileys

#include <ruby.h>

typedef struct {
    int foo;
}
my_data_t;

static void
my_data_mark(void* ptr)
{

haileys

/************************************************

  eval.c -

  $Author: matz $
  $Date: 1996/12/25 08:54:45 $
  created at: Thu Jun 10 14:22:17 JST 1993

  Copyright (C) 1993-1997 Yukihiro Matsumoto

haileys

  def load_yaml_properly(yaml)
    YAML.load yaml
  rescue ArgumentError => e
    raise e unless e.message =~ /undefined class\/module (.*)/
    $1.constantize
    retry
  end

haileys

chan = Channel.new

4.times do |i|
  go 4.times { |j|
    chan <- "#{i} #{j}"
  }
end

16.times do
  puts <-chan

haileys

def filter_output!
  r, w = IO.pipe
  fork do
    w.close
    until r.eof?
      line = r.gets
      next if line =~ /^Started GET/
      puts line
    end
  end

haileys

module Kernel
  def int(mid)
    meth = instance_method(mid)
    define_method(mid) { |*args, &bk|
      val = meth.bind(self).call(*args, &bk)
      raise TypeError, "#{mid} did not return an Integer" unless val.is_a? Integer
      val
    }
    mid
  end