Can I remove methods from a single object, but not its class?

[Sam Roberts]

I want to allow method calls during initialization, but not after:

class Foo
attr_writer pt
def initialize
yield self

# doesn't work
remove_method 'opt='

# doesn't work
class < self
remove_method 'opt='
end

# there must be a way?????
end
end

f = Foo.new { |s| s.opt = 4 }

# I want this to fail!
f.opt = 1


This has to be possible... whats the magic? Should I use
#method_missing, so I can decide to respond to it only during
initialization?

Thanks,
Sam

 

[Nikolai Weibull]

* Sam Roberts (Feb 27, 2005 00:50):

class Foo
attr_writer pt
def initialize
yield self

# doesn't work
remove_method 'opt='

# doesn't work
class < self
remove_method 'opt='
end

# there must be a way?????
end
end

f = Foo.new { |s| s.opt = 4 }

# I want this to fail!
f.opt = 1

This has to be possible... whats the magic? Should I use
#method_missing, so I can decide to respond to it only during
initialization?

class Foo
attr_writer pt
def initialize
yield self
undef pt=
end
end

nikolai

 

[David A. Black]

Hi --

I want to allow method calls during initialization, but not after:

class Foo
attr_writer pt
def initialize
yield self

# doesn't work
remove_method 'opt='

# doesn't work
class < self
remove_method 'opt='
end

Try:

class << self
undef_method 'opt='
end


David

 

[Sam Roberts]

Thank you both!

Sam

Quoting (e-mail address removed), on Sun, Feb 27, 2005 at 09:00:33AM +0900:

class Foo
attr_writer pt
def initialize
yield self
undef pt=
end
end

nikolai

Quoting (e-mail address removed), on Sun, Feb 27, 2005 at 06:45:24PM +0900: