ruby/rails wtf

gistfile1.rb

# ruby 1.9.3-p194 + rails 3.2.6

Date.new.step(Date.new, 1.second).map{}
#=> TypeError: expected numeric
Date.new.step(Date.new, 1.second.to_i).map{}
#=> [nil]
Date.new.step(Date.new, 1).map{}
#=> [nil]

# ruby 1.9.2-p290 + rails 3.2.6

Date.new.step(Date.new, 1.second).map{}
#=> [nil]
Date.new.step(Date.new, 1.second.to_i).map{}
#=> [nil]
Date.new.step(Date.new, 1).map{}
#=> [nil]

@fredwu I don't think this has anything to do with Rails. It seems like Date in ruby-core has changed. My hunch is that someone stopped calling NUM2INT, which will attempt to convert your object to an integer.

Can you try this code on 1.9.2 vs 1.9.3?

require 'date'

class Foo
  def to_i
    1
  end
end

Date.new.step(Date.new, Foo.new).each { }

Oh, yeah, what I said but the other way around: 1.9.2 used to call it, and it was to_i, not to_int.

Thanks @rkh and @tenderlove!

@tenderlove I've tried your snippet and on both 1.9.2 and 1.9.3, this is the result:

TypeError: no implicit conversion from nil to integer