add Field.getarraylen()

2014-02-08 10:36:23 -05:00
parent c9872d911b
commit 7bdcef3767
2 changed files with 29 additions and 1 deletions
--- a/devsupApp/src/devsup/_nullapi.py
+++ b/devsupApp/src/devsup/_nullapi.py
@@ -168,6 +168,13 @@ class _Field(object):
          lock is held (ie withing :meth:`process <DeviceSupport.process>`).
        """

+    def getarraylen(self):
+        """Return the number of active elements for the field.
+        
+        >>> F = Field(...)
+        >>> assert len(F)>=F.getarraylen()
+        """
+
    def putarraylen(self, len):
        """Set the number of active elements in field's array.