dtl

// example showing use of std::transform() with a select_update_iterator



// functor used in the transform example

class AddOneToExampleLong : public std::unary_function<Example, Example>

{

public:

	Example operator()(const Example &example)

	{

		Example result(example);

		result.exampleLong++;

		return result;

	}



};



// add one to the value of the exampleLong field for all rows in the table

void TransformSelectUpdate()

{

   DBView<Example> view("DB_EXAMPLE");



   DBView<Example>::select_update_iterator read_update_it = view.begin();

   std::transform(view.begin(), view.end(), read_update_it, AddOneToExampleLong());

}

Copyright © 2002, Michael Gradman and Corwin Joy.

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