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Creating a pipe
ahzf edited this page Feb 23, 2011
·
6 revisions
The pipes that come prepackaged with Pipes.NET are not sufficient for every use case. In many situations, it will be necessary to create a pipe that will solve a particular mapping from an input to an output. Pipes make it easy to create new pipes with the AbstractPipe<S, E>
class, as in most cases there is just a single method that needs to be implemented: Boolean AbstractPipe.MoveNext()
. The example below demonstrates the internals of a simple pipe that maps a string to the number of characters contained in that string.
public class CharacterCountPipe : AbstractPipe<String, UInt64>
{
public override Boolean MoveNext()
{
if (_InternalEnumerator == null)
return false;
if (_InternalEnumerator.MoveNext())
{
_CurrentElement = (UInt64) _InternalEnumerator.Current.Length;
return true;
}
return false;
}
}
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