Does this method exist? I think that it doesn't, but I just thought
I'd make sure.
···
--
Giles Bowkett
Blog: http://gilesbowkett.blogspot.com
Portfolio: http://www.gilesgoatboy.org
Tumblelog: http://giles.tumblr.com/
Giles Bowkett wrote:
Does this method exist? I think that it doesn't, but I just thought
I'd make sure.--
Giles BowkettBlog: http://gilesbowkett.blogspot.com
Portfolio: http://www.gilesgoatboy.org
Tumblelog: http://giles.tumblr.com/
It is not necessary, because Classe are objects...
irb(main):001:0> class Otto
irb(main):002:1> def hi
irb(main):003:2> puts "Hi!"
irb(main):004:2> end
irb(main):005:1> end
=> nil
irb(main):006:0> Hugo = Otto
=> Otto
irb(main):007:0> Otto.new.hi
Hi!
=> nil
irb(main):008:0> Hugo.new.hi
Hi!
=> nil
Wolfgang Nádasi-Donner
···
--
Posted via http://www.ruby-forum.com/\.
Quoth Giles Bowkett:
Does this method exist? I think that it doesn't, but I just thought
I'd make sure.--
Giles BowkettBlog: http://gilesbowkett.blogspot.com
Portfolio: http://www.gilesgoatboy.org
Tumblelog: http://giles.tumblr.com/
Irb says no, but I'd guess you'd have already tried that.
···
--
Konrad Meyer <konrad@tylerc.org> http://konrad.sobertillnoon.com/
Giles Bowkett wrote:
Does this method exist? I think that it doesn't, but I just thought
I'd make sure.--
Giles BowkettBlog: http://gilesbowkett.blogspot.com
Portfolio: http://www.gilesgoatboy.org
Tumblelog: http://giles.tumblr.com/
Again - it cannot exist. The syntactic element "alias" cannot be applied
to local variables, instance variables, class variables and constants -
because class names are (usually) constants, they can't have aliases. If
you use normal assignment to constants for aliasing classes a simple
method can be defined...
class Class
def aliases?
Module.constants.find_all{|c|self.equal?(const_get(c))}
end
end
Otto = String
Hugo = String
p String.aliases? # => ["Hugo", "String", "Otto"]
Wolfgang Nádasi-Donner
···
--
Posted via http://www.ruby-forum.com/\.
Do you mean that you'd like a list of all aliases defined in a class,
similar to #instance_methods?
T.
···
On Oct 10, 9:58 pm, "Giles Bowkett" <gil...@gmail.com> wrote:
Does this method exist? I think that it doesn't, but I just thought
I'd make sure.
Wolfgang Nádasi-Donner wrote:
Giles Bowkett wrote:
...
btw - is there a difference between "alias" and "alias_method" if
applied to a method name (I don't mean that I must use Symbols in
"alias_method)?
Wolfgang Nádasi-Donner
···
--
Posted via http://www.ruby-forum.com/\.
It seems you and I understood the question in two different ways. Only
Giles can answer this for certain, but I don't think you're answering
the question he asked.
I understood the point of Class#aliases to mean not "Are there any
other constants out there that are really the same class object, and
if so, what are they?" but "Are there any methods in this class that
are aliases for other methods, and if so, what are the connections?"
Giles, please explain.
···
On Oct 11, 2:46 am, "Wolfgang Nádasi-Donner" <ed.oda...@wonado.de> wrote:
Giles Bowkett wrote:
> Does this method exist? I think that it doesn't, but I just thought
> I'd make sure.> --
> Giles Bowkett> Blog:http://gilesbowkett.blogspot.com
> Portfolio:http://www.gilesgoatboy.org
> Tumblelog:http://giles.tumblr.com/Again - it cannot exist. The syntactic element "alias" cannot be applied
to local variables, instance variables, class variables and constants -
because class names are (usually) constants, they can't have aliases. If
you use normal assignment to constants for aliasing classes a simple
method can be defined...class Class
def aliases?
Module.constants.find_all{|c|self.equal?(const_get(c))}
end
endOtto = String
Hugo = String
p String.aliases? # => ["Hugo", "String", "Otto"]Wolfgang Nádasi-Donner
--
Posted viahttp://www.ruby-forum.com/.
--
-yossef
Trans wrote:
Does this method exist? I think that it doesn't, but I just thought
I'd make sure.Do you mean that you'd like a list of all aliases defined in a class,
similar to #instance_methods?
If so, I brought this up a while back:
http://blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-talk/196740
Ryan Davis came up with a rather interesting solution. 
One problem right off the bat, however, is that the Ruby source would need to be modified to be more stringent about using true aliases in order such a method to be accurate.
Regards,
Dan
···
On Oct 10, 9:58 pm, "Giles Bowkett" <gil...@gmail.com> wrote:
Giles, please explain.
--
-yossef
I was skimming, and read that as "Giles, please explain yourself."
Anyway -
Do you mean that you'd like a list of all aliases defined in a class,
similar to #instance_methods?
Actually no. I was looking at an error message that expected #aliases
to exist, and I thought it was weird.
I understood the point of Class#aliases to mean not "Are there any
other constants out there that are really the same class object, and
if so, what are they?" but "Are there any methods in this class that
are aliases for other methods, and if so, what are the connections?"
Nope, it was just a weird error message referencing some internal
code. But both these interpretations are pretty interesting.
Technically, as I learned from Ryan Davis, you **can** actually
"alias" a class, even though you can't **alias** a class.
Monkey = String
=> String
m = Monkey.new("asdf")
=> "asdf"
m.gsub!(/asdf/, "qwerty")
=> "qwerty"
···
--
Giles Bowkett
Blog: http://gilesbowkett.blogspot.com
Portfolio: http://www.gilesgoatboy.org
Tumblelog: http://giles.tumblr.com/