[2024-12-17] Allow for multiple timing operations

- Return `Init` object from `tic`, and accept it in `toc`. This
overrides the internal class time.
- Return results from `toc` to remove need for class instantiation in
Python.
- Print elapsed time in seconds by default when `toc` is called.

src/lib.rs

@@ -19,6 +19,7 @@ mod tictoc {
         seconds: f64,
     }
     
+    #[derive(Clone)]
     #[pyclass(name = "init")]
     pub struct Init {
         time: Instant,
@@ -44,23 +45,32 @@ mod tictoc {
             }
         }
     
-        fn tic(&mut self) {
+        fn tic(&mut self) -> PyResult<Init> {
             self.time = Instant::now();
             self.status = true;
+            Ok(Init::new())
         }
     
-        fn toc(&mut self) -> PyResult<()> {
-            if self.status == false {
+        fn toc(&mut self, tic: Option<Init>) -> PyResult<Results> {
+            let elapsed_time = match tic {
+                Some(ref tic) => tic.time.elapsed(),
+                None => self.time.elapsed(),
+            };
+            let status = match tic {
+                Some(ref _tic) => true,
+                None => self.status,
+            };
+            if status == false {
                 Err(PyException::new_err("tic() must be called before toc()"))    
             } else {       
-                let elapsed_time = self.time.elapsed();
                 self.results = Results {
                     nanos: elapsed_time.as_nanos(),
                     micros: elapsed_time.as_micros(),
                     millis: elapsed_time.as_millis(),
                     seconds: elapsed_time.as_secs_f64(),
                 };
-                Ok(())
+                println!("The elapsed time was {} seconds.",self.results.seconds);
+                Ok(self.results.clone())
             }
         }
     }

tictoc/__init__.py

@@ -4,6 +4,6 @@ __doc__ = tictoc.__doc__
 if hasattr(tictoc, "__all__"):
     __all__ = tictoc.__all__
 
-results = tictoc.init();
-tic = results.tic;
-toc = results.toc;
+t = tictoc.init();
+tic = t.tic;
+toc = t.toc;