exist() for functions only?

2014 12 19
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更新时间：2014 12 22
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As I understand, the exist() function in MATLAB will return "2" if the input is a MATLAB function.
The list of options for the second input 'kind' are builtin, class, dir, file, and var.
I want to input 'kind' so that exist() will ONLY search for functions, and return 2 if it is a match to a function and a 0 if not.
Is there any way to do this?

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Sean de Wolski
Sean de Wolski 2014-12-22
So you mean ONLY functions or any MATLAB files that will run (scripts/functions/classes)? which will return something for scripts and classes as well.
Sean de Wolski
Sean de Wolski 2014-12-22
For functions only, this blog post and ensuing comments explains:
http://blogs.mathworks.com/loren/2013/08/26/what-kind-of-matlab-file-is-this/

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matt dash
matt dash 2014-12-19

2 个投票

An option that is not exactly what you describe, but might work for you:
isempty(which([functionname,'.m']))

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per isakson
per isakson 2014-12-20
... but why not just
isempty(which( functionname ))
matt dash
matt dash 2014-12-20
Without the .m it will not distinguish between functions and variables.
per isakson
per isakson 2014-12-20
编辑：per isakson 2014-12-20
Yes, exactly!
Daniel
Daniel 2014-12-22
Will this work in a deployed application? since the file isn't actually on the filepath any longer as its packaged in an EXE?
Sean de Wolski
Sean de Wolski 2014-12-22
What about p-files?

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Azzi Abdelmalek
Azzi Abdelmalek 2014-12-19
编辑：Azzi Abdelmalek 2014-12-19

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exist()==2
%or
A = exist('name','file')

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Daniel
Daniel 2014-12-19
My problem here is what if it exists as a workspace variable or another non-m file on the search path? in that case it will return 1 or 5 respectively, while I would still not be sure if it exists as a funciton.

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