list.Single()

Syntax

any list.Single()

Returns

The value in a single-element list.

Remarks

The method throws a Single called on a list with X elements error at runtime if the list is empty or contains more than one items.

Sample

listSample.rfs

var i = list.New();
/* 'Single called on list with 0 elements' error at runtime
  var j = i.Single();
*/
i.Add(42);
var k = i.Single();
trace k;

Figure 401. The trace message output of the script above

Developer Documentation