Close diary file on Error

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gire
gire 2012-7-20
评论： Florian Rössing 2022-5-6
Hi, I am using the diary function to log my application output. Something like
diary(path_to_logfile)
% all my code with output to the console, matrices written to desk, etc
diary off
When the code fails, the diary is not closed. One option would be to wrap all the code on a try-catch statement and close it on the catch.
Is there another way to avoid the diary being "open" when the app fails?

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采纳的回答

Jan
Jan 2012-7-20
TRY-CATCH is really the best solution:
diary(path_to_logfile)
try
% all my code with output to the console, matrices written to desk, etc
catch ME
fprintf(1, 'ERROR:\n%s\n', ME.message);
end
diary off
This is clean an efficient, and you could insert other code for cleanup also, e.g. fclose('all').
  1 个评论
gire
gire 2012-7-20
I was hoping for another option because I do not like having all my code wrapped by try-catch. After some research and your answer I think this is the only option. Thanks :)

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更多回答（2 个）

Walter Roberson
Walter Roberson 2012-7-20
onCleanup() might be appropriate for you.
Andrew Janke
Andrew Janke 2020-1-31
The onCleanup function is what you want in modern Matlab. No try/catch to ugly up your code, and it's robust even against a dbquit.
function my_function
diary(path_to_logfile)
RAII.diary = onCleanup(@() diary('off'))
% ... now do whatever, and don't worry about closing the diary; it'll
% be automatically closed whenever this function returns for any reason...
end

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