fmt, fixes and additions

tst/examples/basic_usage.rs

@@ -1,16 +1,16 @@
-use tst::TST;
 use std::time::Instant;
+use tst::TST;
 
 fn main() -> Result<(), tst::Error> {
     // Create a temporary directory for the database
     let db_path = std::env::temp_dir().join("tst_example");
     std::fs::create_dir_all(&db_path)?;
-    
+
     println!("Creating ternary search tree at: {}", db_path.display());
-    
+
     // Create a new TST
     let mut tree = TST::new(db_path.to_str().unwrap(), true)?;
-    
+
     // Store some data
     println!("Inserting data...");
     tree.set("hello", b"world".to_vec())?;
@@ -19,50 +19,50 @@ fn main() -> Result<(), tst::Error> {
     tree.set("apple", b"fruit".to_vec())?;
     tree.set("application", b"software".to_vec())?;
     tree.set("banana", b"yellow".to_vec())?;
-    
+
     // Retrieve and print the data
     let value = tree.get("hello")?;
     println!("hello: {}", String::from_utf8_lossy(&value));
-    
+
     // List keys with prefix
     println!("\nListing keys with prefix 'hel':");
     let start = Instant::now();
     let keys = tree.list("hel")?;
     let duration = start.elapsed();
-    
+
     for key in &keys {
         println!("  {}", key);
     }
     println!("Found {} keys in {:?}", keys.len(), duration);
-    
+
     // Get all values with prefix
     println!("\nGetting all values with prefix 'app':");
     let start = Instant::now();
     let values = tree.getall("app")?;
     let duration = start.elapsed();
-    
+
     for (i, value) in values.iter().enumerate() {
         println!("  Value {}: {}", i + 1, String::from_utf8_lossy(value));
     }
     println!("Found {} values in {:?}", values.len(), duration);
-    
+
     // Delete a key
     println!("\nDeleting 'help'...");
     tree.delete("help")?;
-    
+
     // Verify deletion
     println!("Listing keys with prefix 'hel' after deletion:");
     let keys_after = tree.list("hel")?;
     for key in &keys_after {
         println!("  {}", key);
     }
-    
+
     // Try to get a deleted key
     match tree.get("help") {
         Ok(_) => println!("Unexpectedly found 'help' after deletion!"),
         Err(e) => println!("As expected, 'help' was not found: {}", e),
     }
-    
+
     // Clean up (optional)
     if std::env::var("KEEP_DB").is_err() {
         std::fs::remove_dir_all(&db_path)?;
@@ -70,6 +70,6 @@ fn main() -> Result<(), tst::Error> {
     } else {
         println!("\nDatabase kept at: {}", db_path.display());
     }
-    
+
     Ok(())
-}
+}