Bugfix, failed getting member if it is a boolean value.

lib/+artoa/+data/getMember.m

@@ -12,7 +12,7 @@ function [memberValue] = getMember(pStructure, pMember, pDefaultValue)
 %                             member does not exist.
 
 %% Initialization
-if ~exist(pDefaultValue, 'var')
+if nargin ~= 3
     pDefaultValue = '';
 end