luislavena

def fib(n)
  if n <= 1
    return n
  else
    return fib(n-1) + fib(n-2)
  end
end

puts fib(30)

luislavena

s(:block,
 s(:gasgn, :$count, s(:lit, 0)),
 s(:defn,
  :valid?,
  s(:scope,
   s(:block,
    s(:args, :state, :x, :y),
    s(:iter,
     s(:call, s(:lit, 0), :upto, s(:array, s(:lit, 8))),
     s(:dasgn_curr, :i),

luislavena

require 'benchmark'

def where(app)
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
    return File.join(path, app) if File.exist?(File.join(path, app)) && File.executable?(File.join(path, app))
  end
end

n = 1_000

luislavena

# Couldn't this
ENV["RC_ARCHS"] = `uname -m`.chomp if `uname -sr` =~ /^Darwin/

# better be expressed like this?
ENV["RC_ARCHS"] = `uname -m`.chomp if RUBY_PLATFORM =~ /darwin/

luislavena

=== modified file 'win32/shlib/Makefile'
--- old/win32/shlib/Makefile	2008-01-16 06:24:21 +0000
+++ new/win32/shlib/Makefile	2008-01-16 06:54:25 +0000
@@ -55,6 +55,7 @@
 IMPORT_FLAG = -machine:x86
 IMPORT_OFLAG = -out:
 IMPORT_DFLAG = -def:
+MT_DLL=if exist [email protected] mt.exe -nologo -outputresource:$@;2 -manifest [email protected] $(ADDITIONAL_MANIFESTS)
 !endif
 

luislavena

module FileUtils
  def which(file)
    extensions = ENV['PATHEXT'].split(File::PATH_SEPARATOR) rescue []
    pattern = "#{file}{#{extensions.join(',').downcase}}"
    ENV['PATH'].split(File::PATH_SEPARATOR).each do |path|
      candidate = Dir.glob(File.join(File.expand_path(path), pattern)).first
      return candidate if candidate && File.executable?(candidate)
    end
  end
end

luislavena

package 'openssl', :type => :make do
  default 'source'

  version 'source' do
    download 'http://...'
    
    # hooks
    before :download { }
    after :download { }
    after :extract { }

luislavena

Feature: Compile C code into Ruby extensions.

  In order to automate compilation process.
  As a Gem developer.
  I want rake tasks compile source code for me.

  Scenario: Compile single extension
    Given a safe project directory
    And scaffold code for extension 'extension_one'
    And 'tmp' folder is deleted

luislavena

require 'rubygems'
require 'win32console'
require 'snarl'

Autotest.add_hook :initialize do |at|
  %w{.svn .hg .git .bzr}.each { |exception| at.add_exception(exception) }
end

module Autotest::Snarl
  def self.icon

luislavena

Feature: Cross-compile C extensions

  In order to avoid bitching from Windows users
  As a Ruby developer on Linux
  I want some rake tasks that take away the pain of compilation

  Scenario: compile single extension
    Given that all my source files are in place
    And I'm running a POSIX operating system
    And I've installed cross compile toolchain