Because retry was already taken.
In your Gemfile add:
gem 'rrrretry'Then run bundle install.
Monkey patches Enumerable to add a method called retry that attempts to run code for every element, returns the first valid run.
If code does not return, the original error will be raised.
Most people will use it for network communication like this:
10.times.retry do
SomeNetworkCommunicationThingyHere.new
endBut if you prefer runnable examples check these out:
First run returns a divided by 0 error, so the next result is returned.
[0, 1, 2].each.retry { |i| 1/i }
# => 1If there are no valid returns, the last error will be raised.
[0, 1, 2].each.retry { raise "bar" }
# => RuntimeError: barBy default only StandardError is caught, multiple error types can be
specified.
array = [->{ raise Exception }, ->{ raise SignalException }, ->{ 1 }]
array.each.retry(Exception, SignalException) { |i| i.call }
# => 1For the sake of reporting, previous exceptions are passed to the block.
[0, 1].each.retry do |i, ex|
puts "LOG: Retrying due to exception: #{ex.to_s}" unless ex.nil?
raise "bar"
end
# => LOG: Retrying due to exception: bar
# => RuntimeError: barNaw, it's 8 lines of ruby:
def retry(*exceptions, &block)
exceptions << StandardError if exceptions.empty?
enum ||= self.to_enum
yield enum.next
rescue *exceptions => e
last_exception = e and retry unless e.is_a? StopIteration
raise last_exception unless last_exception.nil?
endBecause I needed this code in more than one project, I didn't like the other solutions, and because coding is fun.
Yes. Do as I say, not as I do.
MIT YO. See MIT-LICENSE for more info.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent