block with retry

with_retry.rb

def with_retry times: 2, catch: StandardError
  yield binding.local_variable_defined?(:tries) ? binding.local_variable_get(:tries).to_i : 0 
rescue *catch
  raise unless (tries = tries.to_i + 1) < times
  retry
end

# or

def with_retry times: 2, catch: StandardError
  tries = 0
  begin
    yield tries
  rescue *catch
    raise unless (tries += 1) < times
    retry
  end
end




class FooError < RuntimeError; end 

puts
puts "-" * 80

begin
  with_retry do |i| 
    puts i
    raise StandardError
  end 
rescue
  puts $!
end

puts
puts "-" * 80

begin
  with_retry times: 5 do |i| 
    puts i
    raise StandardError
  end 
rescue
  puts $!
end

puts
puts "-" * 80

begin
  with_retry catch: [FooError, ArgumentError] do |i| 
    puts i
    raise StandardError
  end 
rescue
  puts $!
end

puts
puts "-" * 80

begin
  with_retry times: 50 do |i| 
    puts i
    raise StandardError if i < 3 
  end 
rescue
  puts $!
end


# --------------------------------------------------------------------------------
# 0
# 1
# StandardError
#
# --------------------------------------------------------------------------------
# 0
# 1
# 2
# 3
# 4
# StandardError
#
# --------------------------------------------------------------------------------
# 0
# StandardError
#
# --------------------------------------------------------------------------------
# 0
# 1
# 2
# 3