Custom function App Designer [Matlab] [App Designer]
13 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Hello !
I made a discovery in App Designer : it seems like "app" is optional when using custom functions :
methods (Access = private)
function add(app, a, b) % get both parameters BUT also app before !
disp(a + b);
end
function startupFcn(app)
app.add(app, 5, 6); % print 11
app.add(5, 6); % let's send 2 parameters (without app) / print also 11
end
end
Am I right ?
Is it advisable to send "app" first ?
Robin
0 commentaires
Réponse acceptée
Steven Lord
le 14 Mar 2019
No, the app object is not optional. You must pass it into the method in order to invoke the method.
What you're seeing is one of the two ways to invoke a method, dot notation versus function notation. See the section "Dot Notation vs. Function Notation" on this documentation page for a description of the specific cases where those two approaches to invoking a method can differ. [You can also use this to dynamically call a method whose name is stored in a string or char variable, as described in the "Referencing Names with Expressions—Dynamic Reference" section on that same documentation page.]
When you use dot notation, the object before the dot is passed into the method as the first input.
1 commentaire
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Develop Apps Using App Designer dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!