Scope of variables passed to function handles?

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Dehuan on 16 Dec 2014
Commented: Dehuan on 16 Dec 2014
Hi, everyone,
I want to ask about the non-input variables in function handles.
For example, following code returns h(1)=2.
clear b;
display(sprintf('h(1)=%d', h(1)));
Is this kind of usage safe and correct?

Accepted Answer

matt dash
matt dash on 16 Dec 2014
As far as i know, yes this is safe and correct. Any non-input variables pass their values to the function at the time the function handle was created. Subsequent changes to or clearing of those variables has no effect on the function.
Dehuan on 16 Dec 2014
Thanks guys.
This is actually a very neat feature.
It makes dependency-inject and functional programming a lot simpler.

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