Begin Rescue

begin and rescue let a program handle an error path and keep running.

begin_rescue.rb

raw_count = 

begin
  count = Integer(raw_count)
  result = 12 / count
  puts "count=#{count}"
  puts "result=#{result}"
rescue ArgumentError
  puts "count=invalid"
rescue ZeroDivisionError
  puts "count=zero"
end

puts "done"

raw_count = 

begin
  count = Integer(raw_count)
  result = 12 / count
  puts "count=#{count}"
  puts "result=#{result}"
rescue ArgumentError
  puts "count=invalid"
rescue ZeroDivisionError
  puts "count=zero"
end

puts "done"

raw_count = 

begin
  count = Integer(raw_count)
  result = 12 / count
  puts "count=#{count}"
  puts "result=#{result}"
rescue ArgumentError
  puts "count=invalid"
rescue ZeroDivisionError
  puts "count=zero"
end

puts "done"

rescue A `rescue` block runs when code inside `begin` raises an exception.