public static VariableContext CreateVariableContext()
{
VariableContext vc = new VariableContext();
vc.AddMethodExtender(typeof(DateFuncs));
vc.AddMethodExtender(typeof(GeneralFuncs));
vc.AddMethodExtender(typeof(MatrixFuncs));
vc.AddMethodExtender(typeof(GraphFuncs));
vc.AddMethodExtender(typeof(MapReduceFuncs));
vc.AddMethodExtender(typeof(StatisticsFuncs));
vc.AddMethodExtender(typeof(ExpressionFuncs));
vc.AddMethodExtender(typeof(CustomFuncFactory));
vc.AddMethodExtender(typeof(Distribution));
vc.AddMethodExtender(typeof(DrawFuncs));
return(vc);
}