[Scilab-users] Get back the name of a function given as argument

[Pierre Vuillemin]

My bad, I've just realised that

- this routine will actually give the name of the last copy of the 
function (in case of multiple imbricated function calls),

- besides, a simpler solution consists in using the name of the local 
copy of the function.

deff('y = fun(x)','y = x^2');
deff('y = f(x)','y = x');
deff('minimize(f)','disp(evstr(''f(2)''))');

minimize(f)   // displays 2
minimize(fun) // displays 4


Le 13.10.2015 08:44, Pierre Vuillemin a écrit :
> Hi Samuel,
> 
> Thank you for the answer. I have finally came up with this routine :
> 
> function funName = sopi_retrieveFunName(f)
>     varList = who_user(%f);
>     for i = 2:size(varList,1) // "f" is the local copy of the function
> and is the first one in the varList, it must be discarded
>         varName = varList(i);
>         execstr("var = "+varName);
>         if var == f then
>             funName = varName;
>             break;
>         end
>     end
> endfunction
> 
> It retrieves the name of the function given as argument by comparing
> it to the user's variables. It (very) far from being elegant, but it
> seems to work.
> 
> Will there be a better way to achieve that with Scilab 6 ?
> 
> Pierre
> 
> 
> Le 12.10.2015 21:02, Samuel Gougeon a écrit :
>> Hi Pierre,
>> 
>> Le 12/10/2015 16:46, Pierre Vuillemin a écrit :
>>> Hi all,
>>> 
>>> I am building some optimisation tools, and in this context, I was 
>>> wondering if it was possible to get back the name of a function given 
>>> as argument of another function.
>>> 
>>> More specifically, consider the function 'fun' defined as
>>> 
>>> deff('[f,g] = fun(x)','f = x^2;g = 2*x');
>>> 
>>> and an optimisation routine "minimize" which first argument is a 
>>> function.
>>> 
>>> Is there a way to get back the name of the function "fun" when 
>>> calling "minimize(fun)" ?
>> 
>> I am afraid that, with 5.5.2,  you have to use something like
>> minimize("thefun") instead, with
>> 
>> function argout = minimize(fun,...)
>>     execstr("fun="+fun);
>>    ...
>> endfunction
>> 
>> Samuel
>> 
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