sleep([duration]) â fixnum
Instance Public methods
Suspends the current thread for duration seconds (which may be any
number, including a Float with fractional seconds). Returns
the actual number of seconds slept (rounded), which may be less than that
asked for if another thread calls Thread#run. Called without
an argument, sleep() will sleep forever.
Time.new #=> 2008-03-08 19:56:19 +0900
sleep 1.2 #=> 1
Time.new #=> 2008-03-08 19:56:20 +0900
sleep 1.9 #=>