Is there any special way to define a class in Ruby that will have just
one instance object? I do not need even a class name.
I mean something simple like that
obj = class { def foo; puts “Foo”; end }.new
obj.foo
You can use the singleton lib, look:
Your “new” method will become a private method and you`ll instantiate
your
object using “.instance”
I hope to be helpful.
Thank you Wender J. for your fast answer. I read the referenced
documentation but I do not think it is what I was looking for. In fact,
I am not trying to avoid multiple instances. I devise the use of an
object of a class as a mean to access users methods from within a class
I am writing. Something like that;
User’s code
class Anyname
def something
do something
end
def something_else
do something_else
end
end # Anyname
obj = Anyname.new
another_obj = MyClass.new(obj)
another_obj.anything
another_obj.anything_else
My class
class MyClass
def initialize(user_obj)
@user = user_obj
end
def anything
@user.something if @user.respond_to?(“something”)
end
def anything_else
@user.something_else if @user.respond_to?(“something_else”)
end
end # MyClass
In this case, it is pointless to create more than one object Anyname.