MATLAB Answers

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

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farzad
farzad on 27 Jun 2019
Commented: Jan on 1 Jul 2019
Hi all
is there a line to indicate the main code between the try catch loop to avoide rewriting it ?

  5 Comments

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Jan
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
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
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

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Accepted Answer

Jan
Jan on 27 Jun 2019
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
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
Jan on 1 Jul 2019
Just take a look in the code of my answer:
catch ME
fprintf('Error: %s\n', ME.message);

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