C++ API bool is* functions

[Andreas Weber]

Dear all,

I wanted to create a cheat cheet for all the "bool is* (void)" functions
from octave_value derived classes:

This is the current result for the default branch (aka 4.3.0):

https://josoansi.de/files/check_type.pdf

(I've removed deprecated, "function" and "classdef" to fit it onto one page)

While creating the table 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