Creates a new #GdaDataModel object without initializing the column types. Using gda.data_model_array.DataModelArray.newWithGTypes is usually better.
number of columns for rows in this data model.
a pointer to the newly created #GdaDataModel.
Creates a new #GdaDataModel object without initializing the column types. Using gda.data_model_array.DataModelArray.newWithGTypes is usually better.