fix: last

src/lib.rs

@@ -67,5 +67,5 @@ pub async fn ask(prompt: &str) -> Result<String, Box<dyn std::error::Error>> {
 
     println!("{:?}", deltas);
 
-    return Ok(deltas[-1].detail.choices[0].delta.content.clone());
+    return Ok(deltas.last().detail.choices[0].delta.content.clone());
 }