diff options
Diffstat (limited to 'lib/singleton.rb')
| -rw-r--r-- | lib/singleton.rb | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/lib/singleton.rb b/lib/singleton.rb index b634b849f7..be1f7ff6ca 100644 --- a/lib/singleton.rb +++ b/lib/singleton.rb @@ -14,11 +14,11 @@ require 'thread' # This ensures that only one instance of Klass can be created. # # a,b = Klass.instance, Klass.instance -# -# a == b +# +# a == b # # => true # -# Klass.new +# Klass.new # # => NoMethodError - new is private ... # # The instance is created at upon the first call of Klass.instance(). @@ -28,11 +28,11 @@ require 'thread' # # ... # end # -# ObjectSpace.each_object(OtherKlass){} +# ObjectSpace.each_object(OtherKlass){} # # => 0 # # OtherKlass.instance -# ObjectSpace.each_object(OtherKlass){} +# ObjectSpace.each_object(OtherKlass){} # # => 1 # # @@ -52,19 +52,19 @@ require 'thread' # # * Overriding Klass._load(str) to call Klass.instance(). # -# * Overriding Klass#clone and Klass#dup to raise TypeErrors to prevent +# * Overriding Klass#clone and Klass#dup to raise TypeErrors to prevent # cloning or duping. # # == Singleton and Marshal # # By default Singleton's #_dump(depth) returns the empty string. Marshalling by -# default will strip state information, e.g. instance variables and taint -# state, from the instance. Classes using Singleton can provide custom -# _load(str) and _dump(depth) methods to retain some of the previous state of +# default will strip state information, e.g. instance variables and taint +# state, from the instance. Classes using Singleton can provide custom +# _load(str) and _dump(depth) methods to retain some of the previous state of # the instance. # # require 'singleton' -# +# # class Example # include Singleton # attr_accessor :keep, :strip @@ -72,20 +72,20 @@ require 'thread' # # this strips the @strip information from the instance # Marshal.dump(@keep, depth) # end -# +# # def self._load(str) # instance.keep = Marshal.load(str) # instance # end # end -# +# # a = Example.instance # a.keep = "keep this" # a.strip = "get rid of this" # a.taint -# +# # stored_state = Marshal.dump(a) -# +# # a.keep = nil # a.strip = nil # b = Marshal.load(stored_state) |