From: Gennady <bystr@...>
Date: 2003-11-24T16:25:26+09:00
Subject: Re: A code snippet: Controlled retry

On Nov 23, 2003, at 23:02, Gennady wrote:

>
> On Nov 23, 2003, at 22:11, Hal Fulton wrote:
>
>>   def try(quiet=true,times=5,secs=1,&block)
>>     count = 0
>>     catch :finished do
>>       begin
>>         block.call
>>       rescue => err
>>         puts "Error was: #{err}" if not quiet
>>         count += 1
>>         throw :finished if count > times
>>         sleep secs
>>         retry
>>       end
>>     end
>>   end
>
>
>   def try(quiet=true,times=5,secs=1,&block)
>     return unless block
>     times.times do
>       begin
>         return block.call
>       rescue => err
>         puts "Error was: #{err}" unless quiet
>         sleep secs
>       end
>     end
>   end
>

Oops, times.times should become times.next.times to function like the 
original. Also, when all attempts are exhausted, the last exception 
must be re-raised or another more appropriate one raised (boolean 
return would also do the trick).