There is an ensure clause which guarantees some processing at the end of code. The ensure block always run whether an exception is raised or not. It is placed after last rescue clause and will always executed as the block terminates.
The ensure block will run at any case whether an exception arises, exception is rescued or code is terminated by uncaught exception.
Syntax:
begin
code..
#..raise exception
rescue
#.. exception is rescued
ensure
#.. This code will always execute.
end
