dynamically read object's attributes

[Mark Pelletier]

I want to read the values of instance variables in an object, but I
don't know how to reach them. I think the code should be something
like:

def read_stuff
s = "Class: #{self.class}:\n"
s += "Instance variables:\n"
self.instance_variables.each do
|var|
s += "#{var}: #{SOMETHING}\n"
end
s += "\n"
end

But I don't know what to replace SOMETHING with. Anyone know?

 

[Stefano Crocco]

Alle venerd=C3=AC 21 settembre 2007, Mark Pelletier ha scritto:

I want to read the values of instance variables in an object, but I
don't know how to reach them. I think the code should be something
like:

def read_stuff
s =3D "Class: #{self.class}:\n"
s +=3D "Instance variables:\n"
self.instance_variables.each do

|var|

s +=3D "#{var}: #{SOMETHING}\n"
end
s +=3D "\n"
end

But I don't know what to replace SOMETHING with. Anyone know?

instance_variable_get var

Stefano

 

[Tim Hunter]

I want to read the values of instance variables in an object, but I
don't know how to reach them. I think the code should be something
like:

def read_stuff
s = "Class: #{self.class}:\n"
s += "Instance variables:\n"
self.instance_variables.each do
|var|
s += "#{var}: #{SOMETHING}\n"
end
s += "\n"
end

But I don't know what to replace SOMETHING with. Anyone know?

Object#instance_variable_get

 

[Mark Pelletier]

Thanks to both of you.

Mark

Alle venerdì 21 settembre 2007, Mark Pelletier ha scritto:

instance_variable_get var

Stefano

 

[Jano Svitok]

I want to read the values of instance variables in an object, but I
don't know how to reach them. I think the code should be something
like:

def read_stuff
s = "Class: #{self.class}:\n"
s += "Instance variables:\n"
self.instance_variables.each do
|var|
s += "#{var}: #{SOMETHING}\n"
end
s += "\n"
end

But I don't know what to replace SOMETHING with. Anyone know?

instance_variable_get(var)

You might want to read rdoc for Object and Module for more similar
interesting methods.