use of member in expressions

[multicaduser]

Just ran across the function "member" in expressions and it looks like what I want but am not able to get it to work.

I have a string which is constructed from more than one input.

A list of possible true results is held in a list expression.

Trying to use the "member" function is always returning true so I'm missing something. Can someone clarify the use?

Below is from the help docs.


Synopsis

Defun: member(
Any, $item,
List, $List,
Name ( $key, Identity ),
Name ( $test, Equal ) )
@{...} Boolean;


Description:
Returns true if a given item is a member of a given list
$List may contain objects of any type; it does not have to be homogenous.

Input Arguments:
item - Specify an member item to search for
List - Specify a list of lists to search for the member item
key
test

Returns:
Boolean - True if the given item is a member of the given list


NX10.0.0.24 MP1/Windows 7 Service Pack 1

 

[multicaduser]

Okayyyy......got it to work, but I still don't know exactly why it works the way it does.

If the formula and variables are put into expressions like this:

MyVariable = "K"
MyList = {"A","C","D","K","Z"}

MyResult = member(MyVariable,MyList) = 1

This works.

However, there are two options that are not included in the above example and are not explained in any documentation I can find.

Does anyone know where there is documentation that explains this function more completely?

NX10.0.0.24 MP1/Windows 7 Service Pack 1