默認加載哪個ruby模塊？

Question

直到最近，我還以爲所有的標準模塊（那些可以在http://ruby-doc.org/stdlib/上看到的模塊）在默認情況下都不會被加載。也就是說，你必須要求每一個你將要使用的。但事實證明，他們中的一些確實裝，從$LOADED_FEATURES內容判斷：

$ ruby -rpp -e 'p $LOADED_FEATURES' 
["enumerator.so", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/x86_64-linux/enc/encdb.so", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/x86_64-linux/enc/trans/transdb.so", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/x86_64-linux/rbconfig.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/compatibility.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/defaults.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/deprecate.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/errors.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/version.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/requirement.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/platform.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/specification.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/exceptions.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb",                       
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/prettyprint.rb", 
"/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/pp.rb"] 

所以我不知道是什麼原因，我可以以任何方式影響呢？

UPD輸出，而不需要pp

$ ruby -e 'p $LOADED_FEATURES' 
["enumerator.so", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/x86_64-linux/enc/encdb.so", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/x86_64-linux/enc/trans/transdb.so", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/x86_64-linux/rbconfig.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/compatibility.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/defaults.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/deprecate.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/errors.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/version.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/requirement.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/platform.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/specification.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/exceptions.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/core_ext/kernel_gem.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb", "/home/yuri/.rbenv/versions/2.0.0-p247/lib/ruby/2.0.0/rubygems.rb"] 

Answer 1

我看到裝載的只有圖書館有RubyGems和確實加入到Ruby 1.9.0中。

順便說一句：你沒有requiremodule s，你require文件。