Merge pull request #588 from hamirmahal/style/simplify-string-formatting

style: simplify string formatting

src/conversions/channels.rs

@@ -151,7 +151,7 @@ mod test {
             let mut converter = ChannelCountConverter::new(input.iter().copied(), from, to);
             let count = converter.clone().count();
             for left_in_iter in (0..=count).rev() {
-                println!("left_in_iter = {}", left_in_iter);
+                println!("left_in_iter = {left_in_iter}");
                 assert_eq!(converter.size_hint(), (left_in_iter, Some(left_in_iter)));
                 converter.next();
             }

src/decoder/mod.rs

@@ -352,7 +352,7 @@ impl FromStr for Mp4Type {
             "m4r" => Ok(Mp4Type::M4r),
             "m4v" => Ok(Mp4Type::M4v),
             "mov" => Ok(Mp4Type::Mov),
-            _ => Err(format!("{} is not a valid mp4 extension", input)),
+            _ => Err(format!("{input} is not a valid mp4 extension")),
         }
     }
 }
@@ -368,7 +368,7 @@ impl fmt::Display for Mp4Type {
             Mp4Type::M4v => "m4v",
             Mp4Type::Mov => "mov",
         };
-        write!(f, "{}", text)
+        write!(f, "{text}")
     }
 }
 
@@ -568,7 +568,7 @@ impl fmt::Display for DecoderError {
             #[cfg(feature = "symphonia")]
             DecoderError::NoStreams => "No streams",
         };
-        write!(f, "{}", text)
+        write!(f, "{text}")
     }
 }
 

src/decoder/wav.rs

@@ -90,10 +90,9 @@ where
                 self.samples_read += 1;
                 i32_to_i16(value.unwrap_or(0))
             }),
-            (sample_format, bits_per_sample) => panic!(
-                "Unimplemented wav spec: {:?}, {}",
-                sample_format, bits_per_sample
-            ),
+            (sample_format, bits_per_sample) => {
+                panic!("Unimplemented wav spec: {sample_format:?}, {bits_per_sample}")
+            }
         }
     }
 

src/stream.rs

@@ -208,7 +208,7 @@ impl CpalDeviceExt for cpal::Device {
         let (mixer_tx, mut mixer_rx) =
             dynamic_mixer::mixer::<f32>(format.channels(), format.sample_rate().0);
 
-        let error_callback = |err| eprintln!("an error occurred on output stream: {}", err);
+        let error_callback = |err| eprintln!("an error occurred on output stream: {err}");
 
         match format.sample_format() {
             cpal::SampleFormat::F32 => self.build_output_stream::<f32, _, _>(

tests/flac_test.rs

@@ -17,8 +17,7 @@ fn test_flac_encodings() {
 
     // 24 bit FLAC file exported from Audacity (2 channels, various compression levels)
     for level in &[0, 5, 8] {
-        let file =
-            std::fs::File::open(format!("assets/audacity24bit_level{}.flac", level)).unwrap();
+        let file = std::fs::File::open(format!("assets/audacity24bit_level{level}.flac")).unwrap();
         let mut decoder = rodio::Decoder::new(BufReader::new(file)).unwrap();
         assert!(decoder.any(|x| x != 0));
         #[cfg(all(feature = "flac", not(feature = "symphonia-flac")))]