define string as "empty" or "nothing"

[JonathanK]

Hello,

I know that a can define a number as "NaN" - this is great, because it's a nice way to check weather the variable is filled yet. But is it possible to make something similar with string? Something like string = "empty" or "nothing"...

Thanks for your help

Jonathan K.

[markus kossmann · Accepted solution]

There is a Len() funtion for strings. What about  assigning "" to the strings and considering a string with Len() = 0 as empty ?

[James_Grey]

stringVariable == "" should also work. String variables are initially empty in TestStand unless you explicitly specify a different initial value.