MATLAB: Determining if a variable is a function handle

function handle

Is there a function to determine if a variable is a function handle? ishandle works only for graphics or Java object handles.

Thanks

Best Answer

isa(YourVar,'function_handle')

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MATLAB: Matlab Grader – Determining if a variable is a function handle.

Assessment tests must assert the result. They do not recognize logical results as answers to the test. So the issue is not that false is being marked as correct. The isa(f,'function_handle') is returning false. It is that no assert has told Grader the result is incorrect.

Put another way, assessment tests are correct unless the code returns an error. Assert throws an error if the condition is false. So does the built-in assessVariableEqual function.

MATLAB: Handles.

It depends on how it was defined:

handles.num = 15

Now "handles" is a struct containing the field "num", which has the value 15. But if your define "handles" as object, it could be something different.

So please take the time to investigate it yourself:

class(handles)
whos('handles')
methods(handles)

If I dare to guess, "handles = guidata(FigureHandle)" might be the creator of the struct "handles". If so, see "help guidata" for more details.

Best Answer

Related Solutions

MATLAB: Matlab Grader – Determining if a variable is a function handle.

MATLAB: Handles.

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