Rails - Sep 2013 - Need suggestion how can I skip the rest par inside a loop when erro is raised

I need one suggestions from you :-

 Suppose I do have a code as below:

   until row == nil do
     #code1
     begin
      #code2 <~~ which can raise an error
     rescue
     end
     #here I want some guard which can check,if any error occurred or
not.If #error then skip below part and continue from the next row.
     #code3
      row+=1
   end

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Just use error handling properly.

begin
#standard code
rescue
#only runs if an error occurred
else
#only runs if an error did not occur
ensure
#always runs at the end regardless of error level
end

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On Sep 12, 2013, at 8:56 AM, Joel Pearson
<lists-fsXkhYbjdPsEEoCn2XhGlw@public.gmane.org> wrote:
> Just use error handling properly.
> 
> begin
> #standard code
> rescue
> #only runs if an error occurred
> else
> #only runs if an error did not occur
> ensure
> #always runs at the end regardless of error level
> end
It seems to me that OP may not even understand:

begin
#standard code
#only runs if no error earlier in this block
rescue
#only runs if an error occurred
end
#always runs as long as all exceptions are caught and none are re-thrown

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Joel Pearson wrote in post #1121289:
> Just use error handling properly.
>
> begin
> #standard code
> rescue
I am looking for the below operations,but only when error will be 
occured :

a = (1..10)
i=0
until a.size>10
 next i+=1 if i<5 # this should be done on Error
 p a[i]
 i+=1
end

If still I am not clear,please let me know the confusions.

until val == nil
  #line1
  #line2 #<~~ error can be generated here.If error happened I want to 
start
from #line1 again.skipping the below code.
  #line3
   ...
end

Thanks

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Maybe a real example would help, rather than infinite-loop pseudo-code.

val = -3
until val > 2
  begin
    val +=1
    1/val
  rescue
    puts ''Error on '' + val.to_s
  else
    puts ''No Error on '' + val.to_s
  end
  puts ''Finished with '' + val.to_s
end

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