initial commit with code I worked on in rust-playground

main.rs

@@ -0,0 +1,20 @@
+mod blocktree;
+
+use crate::blocktree::{NoteBlock, NotePage};
+
+fn main() {
+    let root_block = NoteBlock::new(0,Some(1),Some(2),String::from("hello"));
+    let mut page = NotePage::new(String::from("page 1"), 0, root_block);
+    let new_block = NoteBlock::new(1,None,None, String::from("world"));
+    page.insert(new_block);
+    let new_block = NoteBlock::new(2,Some(3),None, String::from("world"));
+    page.insert(new_block);
+    let new_block = NoteBlock::new(3,Some(4),None, String::from("world"));
+    page.insert(new_block);
+    let new_block = NoteBlock::new(4,None,None, String::from("world"));
+    page.insert(new_block);
+    page.build_tree();
+
+    println!("{:?}", page);
+//    println!("{:?}", page.block_tree_root.first_child_node)
+}