Create Diary in a function?

3 views (last 30 days)
I am currently working on a simulation project where I want progress logs to be written to a file, so I can inspect them later. I was using diary for this. However having the setup of diary in the main function look ugly and made it bulky, so I wanted to move all the setup and diary functionality to a seperate function alike this:
function createLogFile(RunPath)
diaryfile = append(RunPath, 'log.txt');
if exist(diaryfile, 'file')
RAII.diary = onCleanup(@() diary('off'));
diary on
However as soon as the function finishes the diary falls out of scope and is closed.
Is there a way to pass the diary out of the function?

Accepted Answer

Walter Roberson
Walter Roberson on 6 May 2022
Return RAII from the function. Your onCleanup will not fire until the struct stops existing.
Florian Rössing
Florian Rössing on 9 May 2022
Thanks for that nice explanation. I believed taht RAII was some kind of system object that specifically has this attribute. The oddly specific and strange name led me to believe that.
Walter Roberson
Walter Roberson on 9 May 2022 sounds plausible

Sign in to comment.

More Answers (0)


Find more on Loops and Conditional Statements in Help Center and File Exchange




Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!