Re: C++ API bool is* functions

[siko1056]

Andreas Weber-6 wrote
> [...] I found out that "is_true" throws an error for Cell inputs. Is this
> wanted? And if yes, why is "is_true" the only one?
> 
> -- Andy

Dear Andy,

I am afraid, that this behavior is wanted, see [1]:

bool
octave_cell::is_true (void) const
{
   error ("invalid conversion from cell array to logical value");
}

The reason for this is not obvious to me.  To my knowledge implicit
conversion might happen in C++ with constructors only [2]?

Best,
Kai

[1]
https://www.octave.space/latest/doxygen/d7/ded/ov-cell_8cc_source.html#l00537
[2] http://en.cppreference.com/w/cpp/language/explicit



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