is very similar to

 is very similar to

 the \ref lemon::GraphWriter "GraphWriter"

 the \ref lemon::GraphWriter "GraphWriter"

 but the reading method does not depend on the order of the

 but the reading method does not depend on the order of the

 given commands.

 given commands.

 whitespaces, therefore it has some extra possibilities to control how

 whitespaces, therefore it has some extra possibilities to control how

 it should skip the values when the string representation contains spaces.

 it should skip the values when the string representation contains spaces.

 \code

 \code

 GraphReader<ListGraph> reader(std::cin, graph);

 GraphReader<ListGraph> reader(std::cin, graph);

 To read a map (on the nodes or edges)

 To read a map (on the nodes or edges)

 the \ref lemon::GraphReader "GraphReader"

 the \ref lemon::GraphReader "GraphReader"

 should know how to read a Value from the given map.

 should know how to read a Value from the given map.

 By the default implementation the input operator reads a value from

 By the default implementation the input operator reads a value from

 When the reader should skip a value in the stream, because you do not

 When the reader should skip a value in the stream, because you do not

 want to store it in a map, the reader skips a character sequence without 

 want to store it in a map, the reader skips a character sequence without 

 whitespaces. 

 whitespaces. 

 If you want to change the functionality of the reader, you can use

 If you want to change the functionality of the reader, you can use