# class StandardError

The most standard error types are subclasses of `StandardError`. A rescue clause without an explicit `Exception` class will rescue all StandardErrors (and only those).

    def foo
      raise "Oups"
    end
    foo rescue "Hello"   #=> "Hello"

On the other hand:

    require 'does/not/exist' rescue "Hi"

raises the exception:

    LoadError: no such file to load -- does/not/exist