Tree_Iterator

Provides simple operations for traversing a tree.

Works with any tree structure providing that you can return the set of children for a node when requested.

FindInTree

Searches the tree for a child that satisfies a condition.

As soon as we find a child that satisfies the condition the tree traversal stops.

   /// search the tree for the 'theOne'.
   var theOne = findInTree<SMCState>(virtualRoot, (node) => node.children, (node) => node.isTheOne);

traverseTree

Traverses the entire tree calling an function on each child.

Traversal continues until the entire tree has been traversed on the call to 'processChild' returns false.

   traverseTree<SMCState>(root, (node) => node.children, (node) {
     print(node);

     /// return false if you want to stop traversal
     return true;
   });

TODO:

  • change algoritm to use iteration rather than recursion.

  • add an iterator for us in a for loop.

  • offer breadth first and depth first operations.

e.g.

 var theOne = findInTree<SMCState>(virtualRoot, (node) => node.children, (node) => node.isTheOne, method: TreeInterator.depthFirst);

Credits

The project contains code from:

https://github.com/mkobuolys/flutter-design-patterns

Currently this code isn't in use but the plan is to take its breadth first/depth first algorithms and implement them into this pacagek.

Libraries

tree_iterator