What is the difference between String Constant and Empty String Constant

[Prabhakant_Patil]

What is the difference between string constant which does not contain any value and the Empty string constant?

While testing a VI which contain a normal string constant in VI analyzer, it gives error to change string constant with the empty string constant?

Please Reply

prabhakant

[PhillipBrooks]

Readability.

Functionally, they are the same. From a coding standpoint, the Empty String Constant is unambiguous.

It is empty and will always be; good for initialization. Also, because you can not type a value into and Empty String Constant, someone would need to conciously replace it to set a 'default' value that is something other than NULL.