attr_accessor for array?

Question

I want to have an array as a instance variable using attr_accessor.

But isn\'t attr_accessor only for strings?

How do I use it on an ar

Answer 1

I think there is a case for this usage. Consider

begin
  result = do_something(obj)
  # I can't handle the thought of failure, only one result matters!
  obj.result = result
rescue
  result = try_something_else(obj)
  # okay so only this result matters!
  obj.result = result
end

And then later

# We don't really care how many times we tried only the last result matters
obj.result

And then for the pro's we have

# How many times did we have to try?
obj.results.count

So, I would:

attr_accessor :results

def initialize
  @results = []
end

def result=(x)
  @results << x
end

def result
  @results.last
end

In this way result behaves as you would expect, but you also get the benefit of accessing the past values.