public static TResult Cata <N, L, TResult>(
this IRoseTree <N, L> tree,
Func <N, IEnumerable <TResult>, TResult> node,
Func <L, TResult> leaf)
{
return(tree.Accept(new CataVisitor <N, L, TResult>(node, leaf)));
}
public void MatchNode()
{
IRoseTree <string, int> tree =
RoseTree.Node("foo",
new RoseLeaf <string, int>(42),
new RoseLeaf <string, int>(1337));
int actual = tree.Accept(new MatchStringNodeVisitor());
Assert.Equal(3, actual);
}
public static IChurchBoolean IsLeaf <N, L>(this IRoseTree <N, L> source)
{
return(source.Accept(new IsLeafVisitor <N, L>()));
}