If you want to make them public, use attr_accessor…


class Foo
attr_accessor :dynamic_accessor
end

f= Foo.new
f.dynamic_accessor = 'blah'


If you really want to go peeking into those private internals, you can use instance_variable_get or set…


f.instance_variable_set(:some_var, 'some_value')
# same as inside class Foo doing @some_value


Check out the RDOC for Object class (every objects parent): http://www.ruby-doc.org/core/classes/Object.html


# I kind of like 'send' as a method:
funcname = 'dynamic_method'
foo.send(funcname) # no need for quotes here


I miss some of the ruby blocks (locally defined functions) already.

If you really wanted the assign accessors on an object for everything, just override method_missing on an object to automatically set a class variable if called with a “something=” method. :)