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how to get name of a function (within the function)

Asked by Mario Trevino on 2 Jul 2013
Latest activity Answered by Luca Balbi on 6 May 2019
Wise gentlemen: how do I get the name of a function within the function?

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4 Answers

Answer by Shashank Prasanna on 3 Jul 2013
 Accepted Answer

Inside the function call the following:
st = dbstack;
namestr = st.name

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Answer by Renwick Beattie on 16 Nov 2018

I realise I'm a bit late to the party, but I was trying to find a solution to this and realise others may have the same needs I do. Neither answer was quite what I wanted. I wanted to create a useful descriptor for where an error has occured so that in a deployed program I can trace back in the source code. Here's a crude testfunc to evaluate what each method returns
function testfunc()
display(['What we see the in parent function when using mfilename is:',mfilename])
st = dbstack;
display(['What we see the in parent function when using dbstack.name is:',st.name])
subfunc()
function subfunc()
display(['What we see inside the sub-function when using mfilename is:',mfilename]) %Jan
st = dbstack;
display(['What we see the in sub-function when using dbstack.name is:',st.name])%Shashank
display(['What we see the in sub-function when using dbstack(1).name is:',st(1).name]) %tweaked Shashank
Then run the following command
testfunc()
the command window returns:
What we see the in parent function when using mfilename is:testfunc
What we see the in parent function when using dbstack.name is:testfunc
What we see inside the sub-function when using mfilename is:testfunc
What we see the in sub-function when using dbstack.name is:subfunctestfunc
What we see the in sub-function when using dbstack(1).name is:subfunc
For my particular purpose the best solution is to return each element in the stack seperately, using the first entry db(1).name for the error dialogue title and for teh message body building a string from db(2:end).name with a useful seperator between

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Answer by Jan
on 3 Jul 2013

This is a little more direct than dbstack:
nameStr = mfilename;

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Answer by Luca Balbi on 6 May 2019

mfilename is not an acceptable answer, as it returns the current file name, not the function's name. If you rely on mfilename inside a function and, for instance, this function gets incorporated as a method in a class, it will not return the expected output. Playing with dbstack results offers far more flexibility.

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