G
Gerardo Santana Gómez Garrido
zero in Ruby is true, not false, in a boolean context.
What does false.to_i return? An exception. There is not a numeric
interpretation for false.
What about nil. nil is nothing. The only other object that evaluates
to false in a boolean context.
What does nil.to_i return? Zero. And I wonder why. How can nil be
interpreted as a number. It's beyond me.
Anyone care to explain it to me?
So far I've found the following links about the issue:
http://www.oreillynet.com/ruby/blog/2005/12/is_this_a_good_thing_or_not.html
http://journal.dedasys.com/articles/2007/05/08/rails-bitten-by-rubys-nil-to_f
http://groups.google.com/group/ruby...6945a4210?lnk=gst&q=nil.to_i#b9f0cac6945a4210
What does false.to_i return? An exception. There is not a numeric
interpretation for false.
What about nil. nil is nothing. The only other object that evaluates
to false in a boolean context.
What does nil.to_i return? Zero. And I wonder why. How can nil be
interpreted as a number. It's beyond me.
Anyone care to explain it to me?
So far I've found the following links about the issue:
http://www.oreillynet.com/ruby/blog/2005/12/is_this_a_good_thing_or_not.html
http://journal.dedasys.com/articles/2007/05/08/rails-bitten-by-rubys-nil-to_f
http://groups.google.com/group/ruby...6945a4210?lnk=gst&q=nil.to_i#b9f0cac6945a4210