Retry does not work

ruby-talk
1

Guy Decoux:

Well the example was probably

def resume_example(x)
print x
x += 4
begin
raise if x < 10
print x
rescue
x = 10
retry
end
puts
end

you have refactored my code to achieve the result. is all code so easily refactored?

def i_am_libaray_code
  # this is a library call
  # to be used in many differnt apps
  # do not add user interface code!
  raise SpecialWaring, "Warning, incoming!"
  ...
end

def resume_example(x)
   begin
      i_am_library_code
   rescue SpecialWaring => e
      puts e
      resume
   end
end

i can not refactor the lib call to conatin stdout, and i need a message from it about its status. perhaps there is another way to do this. if you know please tell!

-t0

2

i can not refactor the lib call to conatin stdout, and i need a message
from it about its status. perhaps there is another way to do this. if
you know please tell!

Becuase you can't refactor the library, you *can't* use resume like you
want use it because you know nothing about the internal of this library

Guy Decoux

3

Hi,

···

In message “Re: retry does not work” on 03/11/20, “T. Onoma” transami@runbox.com writes:

you have refactored my code to achieve the result. is all code so easily refactored?

Not all, but most.

Your “resume” makes exception handling much harder. With “resume”,
every raise can be re-entered, that means programmers need to care
about re-entrance always.

So allowing new thing is not always a good thing.

						matz.
4

“T. Onoma” transami@runbox.com schrieb im Newsbeitrag
news:E1AMm57-0002fp-HX@odie.runbox.com…

Guy Decoux:

Well the example was probably

def resume_example(x)
print x
x += 4
begin
raise if x < 10
print x
rescue
x = 10
retry
end
puts
end

you have refactored my code to achieve the result. is all code so easily
refactored?

def i_am_libaray_code
  # this is a library call
  # to be used in many differnt apps
  # do not add user interface code!
  raise SpecialWaring, "Warning, incoming!"
  ...
end

def resume_example(x)
   begin
      i_am_library_code
   rescue SpecialWaring => e
      puts e
      resume
   end
end

i can not refactor the lib call to conatin stdout, and i need a message
from it about its status. perhaps there is another way to do this. if you
know please tell!

What strikes me is that you use “resume” in the rescue clause instead of
“retry”. Is that on purpose or is maybe a simple misspelling the reason
for your frustration.

Kind regards

robert