How not to repeat the whole code after the try catch loop ?

Asked by farzad on 27 Jun 2019

Latest activity Commented on by Jan on 1 Jul 2019

Accepted Answer by Jan

13 views (last 30 days)

Hi all

is there a line to indicate the main code between the try catch loop to avoide rewriting it ?

5 Comments

Show 2 older comments

Jan on 27 Jun 2019

What does "how the structure is suggested" mean? If you are interested in assistance to solve your problem, it is useful to answer the questions for clarifications.

farzad on 28 Jun 2019

The answer I linked above, shows that I should write my code twice : as you see the lines in green

if my code is too long , every time I have to apply a modification in the code, I should do it two times.

I can't be more clear than this

Jan on 28 Jun 2019

@farzad: You can be more clear: Simply explain, which problem you want to solve.

In this code:

for j = 1:10
   try
      ... your code...
   catch
      warning('found error in %dth file', j);
      continue
   end
   
end

you do not have to write any code twice. The first comment (green line) is a placeholder for your code, and the second comment is some other code, which is executed only, if the first one ran without an error. An alternative version of the above code:

for j = 1:10
   try
      ... your code...
      ... your code, if the above statement succeed
   catch
      warning('found error in %dth file', j);
   end
end

So do you see now, that you do not write anything twice here?

You still did not mention, which problem you want to solve and you assume that anything must be written twice. My questions for clarifications are not answered yet.

You are not a newcomer in this forum, but please let me ask you to read this again: How to ask a good question

1 Answer

Link

Answer by Jan on 27 Jun 2019

Accepted Answer

A bold guess, which contains at least the terms "loop" and "try catch" and "avoid rewriting it":

ready = false;
while ~ready
    try
        executeTheCode;
        ready = true;
    catch ME
        fprintf('%s\ntrying it again...\n', ME.message);
    end
end

11 Comments

Show 8 older comments

farzad on 28 Jun 2019

Amazing ! thank you

farzad on 1 Jul 2019

guys, just one morething : how can I print the Error Text for each case the error is catched ?

I mean additionally to this

warning('found error in %dth file',k);

what can I write to print the Error text ?

Jan on 1 Jul 2019

Just take a look in the code of my answer:

    catch ME
        fprintf('Error: %s\n', ME.message);

You are now following this question

farzad (view profile)