how to suggest a name to save

        function SaveAsButtonPushed(app, event)
              sav=Carico_i_nomiFile_e_Dati_Folder_Struct(6);  
                if ~isempty(sav)
                     sav=strcat(sav,'.ttslist2'); %%per ora stabilisco che la lista abbia questa estensione!
                      app.CurrentOpenList=sav;     
                      app.CurrentopenfilelistTextArea.Value=sav;
                    app.MyTable(:,15)={0}; %%azzero la colonna select
                    StratList=app.MyTable; %sono i dati
                    save(sav,'StratList');
                    fprintf("Salvato i dati nella lista : %s \n",sav);
                    answer=msgbox("Strategia Salvata");  
                end   
                    app.SaveAsButton.Visible="off";
                    app.SaveButton.Visible="off";  
        end
        
        

i want in Nome File write a name which is not on the list (but I want him to suggest it to me)

Example:

Answer 1

[John D'Errico]

Asking a computer to suggest a name is impossible. It cannot know what name might be appropriate, and more importantly, what you think is appropriate.

However, you can just generate a random string of letters, and even numbers. As long or short as you like. Then test to see if that name (unlikely as it might be) is already in use. If it is, then just generate a new string, until you find one that is not already taken. The problem is, this will result in a list of names that are a complete mess in your directories. I doubt you will be happy.

Alternatively, you could just choose the name "untitled" (or something like that), followed by a number. If that name is already taken, then increase the number you will append, until it finds a name that is not in use.

[Stephen23]

The last approach is provided by:

https://www.mathworks.com/matlabcentral/fileexchange/64108-next-available-filename

For example:

name = nextname('lucaLista<1>.ttslist2')

[Alexander]

@Stephen23 Danke.

[John D'Errico]

@Stephen23 - you should have left your answer there. It was better than mine.

[Stephen23]

@John D'Errico: it is still not clear to me what the OP wants.

[Luca Re]

I expressed myself badly.. I want to write "Aggreg_" in the name.. then it will be my job to complete it