nestedFunctions()
Programming
nestedFunctions() is a MATLAB®-compatible programming function for a nested function is defined inside another function's body using a normal "function ... end" block. it closes over the enclosing function's local variables — reading them at call time and writing mutations back to the parent on return. only variables that already existed in the parent scope before the call are written back; new variables created inside the nested function remain local. formal parameters of the nested function shadow (but do not corrupt) identically-named parent variables. limitation: the nested function must be defined (its "function" line executed) before it is called; forward references are not supported. Run it online in your browser with SimLab — free, no install, no license required.
A nested function is defined inside another function's body using a normal "function ... end" block. It closes over the enclosing function's local variables — reading them at call time and writing mutations back to the parent on return. Only variables that already existed in the parent scope before the call are written back; new variables created inside the nested function remain local. Formal parameters of the nested function shadow (but do not corrupt) identically-named parent variables. Limitation: the nested function must be defined (its "function" line executed) before it is called; forward references are not supported.
Syntax
function outer()
count = 0;
function increment()
count = count + 1;
end
increment();
endExamples — run nestedFunctions() in your browser
% Canonical counter — nested fn mutates parent local
function result = makeCounter()
count = 0;
function increment()
count = count + 1;
end
increment();
increment();
result = count; % 2
end
r = makeCounter()▶ RunSee Also
Frequently Asked Questions about nestedFunctions()
Is the nestedFunctions() function free to use in SimLab?
The browser workspace requires no MATLAB® license or installation. Connected features require network access and may have account, tier, availability, or usage limits. You can open nestedFunctions() and 510+ other MATLAB®-compatible function references at simulations4all.com/simlab.
Do I need to install MATLAB to use nestedFunctions()?
No. SimLab’s core parser, workspace state, and most functions run locally in your browser. The nestedFunctions() function requires no MATLAB® license or desktop software download.
What does nestedFunctions() do?
A nested function is defined inside another function's body using a normal "function ... end" block. It closes over the enclosing function's local variables — reading them at call time and writing mutations back to the parent on return. Only variables that already existed in the parent scope before the call are written back; new variables created inside the nested function remain local. Formal parameters of the nested function shadow (but do not corrupt) identically-named parent variables. Limitation: the nested function must be defined (its "function" line executed) before it is called; forward references are not supported. It is a MATLAB®-compatible programming function available in SimLab with the same calling syntax as MATLAB® — typically: function outer() count = 0; function increment() count = count + 1; end increment(); end.
Can I run nestedFunctions() in my browser?
Yes. Open SimLab at simulations4all.com/simlab, write or paste code that calls nestedFunctions(), and run it. This function’s calculation runs locally in the browser. SimLab session analytics, sharing, feedback, and eligible acceleration have separate network boundaries.
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