I have the following code using facets/basicobject with 1.8,
and want to know what the equivalent would be for 1.9:
class Real < BasicObject
def initialize®
@__value = r.to_f
end
define_method(:class) { self.class }
def send(meth, *a, &b)
# Ensure that normal sends go to self, not @__value
self.send(meth, *a, &b)
end
private
def method_missing(meth, *args, &block)
@__value.send meth, *args, &block
end
end
(and similar, defining Int for integers).
This seems to be ok with 1.8, but 1.9 doesn’t have self.
Any thoughts?
Clifford H…
On Feb 26, 11:24 pm, Clifford H. [email protected] wrote:
def send(meth, *a, &b)
(and similar, defining Int for integers).
This seems to be ok with 1.8, but 1.9 doesn’t have self.
Any thoughts?
I’m surprised to see send and class are not defined, since it is
easy enough to override them if need be. Creating them from scratch
is a bit tricky --in fact for #class how is it even possible?
Well, not perfect, but you can do:
def class; Real; end
as long as Real won’t be subclassed; and
require ‘facets/kernel/as’
def send(meth, *a, &b)
send_as(BasicObject, meth, *a, &b) # or
as(BasicObject).send(meth, *a, &b)
end
But why do you not want send to route to method_missing, after all
what other methods are there to call?
T.
On 2/27/08, Trans [email protected] wrote:
On Feb 26, 11:24 pm, Clifford H. [email protected] wrote:
def send(meth, *a, &b)
# Ensure that normal sends go to self, not @__value
self.send(meth, *a, &b)
end
…
This seems to be ok with 1.8, but 1.9 doesn’t have self.
I’m surprised to see send and class are not defined, since it is
easy enough to override them if need be.
Ermm, he said self not send. I don’t think I’d ever heard of
self before, well maybe in Python, but not in Ruby.
–
Rick DeNatale
My blog on Ruby
http://talklikeaduck.denhaven2.com/
Hi,
On Wed, Feb 27, 2008 at 11:47 PM, Rick DeNatale
[email protected]
wrote:
This seems to be ok with 1.8, but 1.9 doesn’t have self.
I’m surprised to see send and class are not defined, since it is
easy enough to override them if need be.
Ermm, he said self not send. I don’t think I’d ever heard of
self before, well maybe in Python, but not in Ruby.
It’s Facets.
Arlen
Trans wrote:
On Feb 26, 11:24 pm, Clifford H. [email protected] wrote:
I have the following code using facets/basicobject with 1.8,
and want to know what the equivalent would be for 1.9:
…clip…
This seems to be ok with 1.8, but 1.9 doesn’t have self.
as long as Real won’t be subclassed;
It will be. That’s its purpose.
But why do you not want send to route to method_missing, after all
what other methods are there to call?
Subclass methods, and eigenclass methods or methods added by
define_method.
If you take a look at the example code here:
http://activefacts.rubyforge.org/svn/examples/ruby/CompanyDirector.rb
The “binary” class method creates methods in the current class and the
class that plays the role at the other end of this binary relationship.
In this example, there are String subclasses and normal classes, no
Real or Int subclasses, but I want the method to work the same.
The point is that these methods are created on the delegate class, and
will be called by send as well as directly. BasicObject omits send, so
calls to send go to method_missing and get delegated, now what I need.
In the Facets implementation, I can re-implement send using self,
but there seems no way to do that in 1.9.
I’m hoping I’m missing something and there is a way to do it.
require ‘facets/kernel/as’
I’m not familiar with “as”, I’ll read it now.
Clifford H…