Question

I found this very weird. Why am I not able to do this?:

puts Time.now
x=2
puts x
puts x.class
sleep x
puts Time.now
x=x.seconds
puts x
puts x.class
sleep (x)
puts Time.now

The output I get is:

Mon Oct 01 16:14:58 +0530 2012
2
Fixnum
Mon Oct 01 16:15:00 +0530 2012
2
Fixnum
rake aborted!
can't convert ActiveSupport::Duration into time interval
/Users/hariharanganapathiraman/Documents/MigrationScripts/sample/lib/import/boot.rb:23:in `sleep'

Similarly it doesn’t work for .minutes or .days.

Answer 1

That’s because ActiveSupport::Duration mimics itself as Fixnum class:

ActiveSupport::Duration.new(3600, [[:seconds, 3600]]).class #=> Fixnum

Use sleep(2.seconds.to_i).