[Scilab-users] %mlistType_clear overloading of clear() for mlist custom types

[Stéphane Mottelet]

Hi,

https://codereview.scilab.org/#/c/20679/ says:

add a %foo_clear overloading on mlist This overload will be called at 
the end of the scope when a variable will not be accessible anymore for 
clearing allocated data.

So it does not say that %foo_clear is called when using "clear". The 
following example seems more relevant:

function %test_clear(t)
   disp cleared
end

function foo()
   m=mlist("test")
end

--> foo()

   "cleared"

S.

Le 01/07/2020 à 13:13, Samuel Gougeon a écrit :
>
> Hello,
>
> Scilab 6.1.0 brings a feature about clearing mlists, that can now be 
> overloaded.
>
> However, it's a special overloading feature, that does not replace the 
> role of clear(), but that comes in addition to it, as documented in 
> the clear page: https://help.scilab.org/docs/6.1.0/en_US/clear.html
>
> "Note: |clear()|can be overloaded for any|mlist("foo")|type, by 
> defining a|%foo_clear()|macro. It will be called either when|clear|is 
> explicitly applied to any mlist of this type, or implicitly when any 
> mlist of this type is deleted when leaving the environment where it 
> has been defined."
>
> Now, when i try to use this feature, i do not get what i understand we 
> should expect. Example:
>
> --> m = mlist("test");
> --> typeof(m)
>  ans  =
>   "test"
>
> --> function %test_clear()
>   >     disp("mlist test cleared")
>   > endfunction
>
> --> clear m
> -->     <<<< nothing is printed. We would expect "mlist test cleared", 
> wouldn't we?
>
>
> What am i doing wrong?
>
> Regards
> Samuel
>
>
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-- 
Stéphane Mottelet
Ingénieur de recherche
EA 4297 Transformations Intégrées de la Matière Renouvelable
Département Génie des Procédés Industriels
Sorbonne Universités - Université de Technologie de Compiègne
CS 60319, 60203 Compiègne cedex
Tel : +33(0)344234688
http://www.utc.fr/~mottelet

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