ruby rescue without begin code example

Example 1: rails begin rescue

begin
  3 + '4'
rescue => e
  puts e.class
  puts e.message
  puts e.trace
end

Example 2: ruby begin rescue ensure

begin
  fire_ze_missiles
rescue
  retry #just once more for good luck
else
  log "We set up them the bomb."
ensure
  wtf_mate
end