The topic came up in chat this morning, thanks to Petruchio, that I think is worth discussing. His side would balance what I offer below as advice to job-seekers.
CONFIDENCE can be a character, or a pointer. If it is a pointer value, it points to something (not itself). If a pointer to nothing, then the CONFIDENCE variable does not reference any object (i.e. a pointer to nothing). Such a NULL pointer can then become useful for discerning an error; for processes return pointers to nothing,if they failed in some way. Therefore, the return value can be tested for NULL.
In reply to proverbs re. confidence by mkmcconn
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