Is there a way to retrieve the output of a function that did not complete properly?
For instance, a (non global) variable that was correctly computed by a function but that couldn't be saved properly because of syntax errors.
1 Answer
In principle, you can't look into a function once the program has stopped with an error. (That's why I often try to avoid functions.)
However, you can achieve what you want by entering debugging mode, using the dbstop function to set a breakpoint:
The
dbstopfunction is used to temporarily stop the execution of a program and give the user an opportunity to examine the local workspace.
In particular, typing
dbstop if error
in the command window before running your code will make it stop at the point that caused the error and look at the variables within that function.
To restore normal behaviour you need the dbclear function. Type
dbclear if error
to remove the previously set breakpoint, or
dbclear all
to remove all breakpoints.
2 Comments
0000011111
I will definitely use this from now on. It's very frustrating to run a code for 8 days and realize once it crashed that the output must be somewhere in the memory, just nowhere to be found.
Luis Mendo
I know what you mean... Functions hide all their internal data. That's often good, but sometimes frustrating. I'd rather have everything in sight.