Question of basic control Ring

It is a lesson in humility, but I just found something I think no intuitive: if I initialize the Strings property of [] of a ring using an empty String array text control, control of the ring as a result of this operation has a string [] array size 1, and its unique element is a string of length 0...

See attached extract:

(done interesting BTW, my schema does not use a ring Refnum and a generic property node, but rather directly node ring property, but changed to generate the snippet)

I see that when you open the Properties dialog box for the ring of text, I can't delete the last element, which name is empty, so it's consistent with the behavior above, but I think that an empty String array is an array of empty strings.

Comments are welcome.

Maybe it's just semantics.  You can have a ring of text with a single element is an empty string.  You can't have a ring of empty text.  There must always be at least one element.

A ring of text is a numeric data type.  In fact an integer data type.  There is no such thing as a whole empty.  It is always to have a value.  The default value is zero.  In a ring of text you must always have at least one element, you can select.  Which means that there must be an element of an array of strings that are associated with.

If you could have a control of the ring which is floating point data type as a double.  And you might have a data value of NaN, we could call a kind of null digital, although I don't think it's really the same principle.

Tags: NI Software

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