with statement, because Ruby can't miss something that Python has, amirite?
It works almost exactly as the Python
with statement, except you can pass more than one
variable to it.
If there's an
__enter__ method it calls it, and if there's an
__exit__ method it calls it
passing the eventual Exception. If any
true when an exception has been
raised it is ignored, if nothing returns
true the exception is raised again.
If you want Python-like functionality for standard objects (for example passing an IO object to
the with and having it closed) you can
require 'with/adapters', otherwise those features are
require 'with' require 'with/adapters' with File.new(ARGV.first, ?r) do |f| f.read end # this will return the contents of the passed path