What does @(x,y)myFunction mean?

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Kristoffer Walker
编辑： Stephen23 2021-12-20
Folks,
Could someone please point me to documentation that explains what the "@(x,y)" means in the below code?
@(x,y)disp('Hello World!')
Similarly, what do the following mean?
StartFcn = @(~,~)myfile
StartFcn = @myfile
StartFcn = {@myfile, 5, 6}
I am trying to get a timer to execute a specific callback in a GUIDE GUI. In order to get this to work, it seems I really need to understand that syntax.
Thank you,
Kris

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Rik
Rik 2019-7-2
编辑：Rik 2019-7-2
The @ symbol generates either a function handle or creates an anonymous function.
You can read more on this doc page.
You third syntax is slightly less obvious. For that one you can find more information here.
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Omar Alamoudi
Omar Alamoudi 2021-12-20
I would like to know the name to the question stated by @madhan ravi
Stephen23
Stephen23 2021-12-20
编辑：Stephen23 2021-12-20
@Omar Alamoudi: because that anonymous function (and indeed all of the other examples shown in the original question) was written as a callback function for a GUI:
https://www.mathworks.com/help/matlab/creating_plots/callback-definition.html
If those two input arguments (object and event) are not used, then they can be ignored, as in that example, but they still need to be defined. It would be better to use tildas for this, which makes the intent clearer.
The code is basically a hello-world callback function.

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