diff --git a/src/common/reedsolomon/GenericGFPolyTestCase.rs b/src/common/reedsolomon/GenericGFPolyTestCase.rs
index 7f410ea..336b83e 100644
--- a/src/common/reedsolomon/GenericGFPolyTestCase.rs
+++ b/src/common/reedsolomon/GenericGFPolyTestCase.rs
@@ -30,21 +30,21 @@ use super::{GenericGF, GenericGFPoly};
 #[test]
 fn testPolynomialString() {
     let FIELD = super::get_predefined_genericgf(super::PredefinedGenericGF::QrCodeField256);
-    let fz = super::GenericGFPoly::new(FIELD, &vec![0; 1]).unwrap();
+    let fz = super::GenericGFPoly::new(FIELD, &[0; 1]).unwrap();
 
     assert_eq!("0", fz.getZero().to_string());
     let n1mono = GenericGF::buildMonomial(FIELD, 0, -1);
     assert_eq!("-1", n1mono.to_string());
-    let p = GenericGFPoly::new(FIELD, &vec![3, 0, -2, 1, 1]).unwrap();
+    let p = GenericGFPoly::new(FIELD, &[3, 0, -2, 1, 1]).unwrap();
     assert_eq!("a^25x^4 - ax^2 + x + 1", p.to_string());
-    let p = GenericGFPoly::new(FIELD, &vec![3]).unwrap();
+    let p = GenericGFPoly::new(FIELD, &[3]).unwrap();
     assert_eq!("a^25", p.to_string());
 }
 
 #[test]
 fn testZero() {
     let FIELD = super::get_predefined_genericgf(super::PredefinedGenericGF::QrCodeField256);
-    let fz = super::GenericGFPoly::new(FIELD, &vec![0; 1]).unwrap();
+    let fz = super::GenericGFPoly::new(FIELD, &[0; 1]).unwrap();
 
     assert_eq!(fz.getZero(), GenericGF::buildMonomial(FIELD, 1, 0));
     assert_eq!(
diff --git a/src/common/reedsolomon/generic_gf.rs b/src/common/reedsolomon/generic_gf.rs
index 48852ec..576c2f5 100644
--- a/src/common/reedsolomon/generic_gf.rs
+++ b/src/common/reedsolomon/generic_gf.rs
@@ -104,7 +104,7 @@ impl GenericGF {
      */
     pub fn buildMonomial(source: GenericGFRef, degree: usize, coefficient: i32) -> GenericGFPoly {
         if coefficient == 0 {
-            return GenericGFPoly::new(source, &vec![0]).unwrap();
+            return GenericGFPoly::new(source, &[0]).unwrap();
         }
         let mut coefficients = vec![0; degree + 1];
         coefficients[0] = coefficient;
diff --git a/src/common/reedsolomon/generic_gf_poly.rs b/src/common/reedsolomon/generic_gf_poly.rs
index 721f0d0..17e083c 100644
--- a/src/common/reedsolomon/generic_gf_poly.rs
+++ b/src/common/reedsolomon/generic_gf_poly.rs
@@ -222,11 +222,11 @@ impl GenericGFPoly {
     }
 
     pub fn getZero(&self) -> Self {
-        GenericGFPoly::new(self.field, &vec![0]).unwrap()
+        GenericGFPoly::new(self.field, &[0]).unwrap()
     }
 
     pub fn getOne(&self) -> Self {
-        GenericGFPoly::new(self.field, &vec![1]).unwrap()
+        GenericGFPoly::new(self.field, &[1]).unwrap()
     }
 
     pub fn multiply_by_monomial(
diff --git a/src/common/reedsolomon/reedsolomon_encoder.rs b/src/common/reedsolomon/reedsolomon_encoder.rs
index 7ded62e..ee2b7da 100644
--- a/src/common/reedsolomon/reedsolomon_encoder.rs
+++ b/src/common/reedsolomon/reedsolomon_encoder.rs
@@ -54,10 +54,8 @@ impl ReedSolomonEncoder {
                     .multiply(
                         &GenericGFPoly::new(
                             self.field,
-                            &vec![
-                                1,
-                                self.field.exp(d as i32 - 1 + self.field.getGeneratorBase()),
-                            ],
+                            &[1,
+                                self.field.exp(d as i32 - 1 + self.field.getGeneratorBase())],
                         )
                         .unwrap(),
                     )
diff --git a/src/pdf417/decoder/pdf_417_scanning_decoder.rs b/src/pdf417/decoder/pdf_417_scanning_decoder.rs
index d405a19..cf56b38 100644
--- a/src/pdf417/decoder/pdf_417_scanning_decoder.rs
+++ b/src/pdf417/decoder/pdf_417_scanning_decoder.rs
@@ -309,9 +309,7 @@ fn getBarcodeMetadata<T: DetectionRXingResultRowIndicatorColumn>(
     //   return leftBarcodeMetadata;
     // }
 
-    if leftBarcodeMetadata.is_none() {
-        return None;
-    }
+    leftBarcodeMetadata?;
 
     if leftBarcodeMetadata.as_ref().unwrap().getColumnCount()
         != rightBarcodeMetadata.as_ref().unwrap().getColumnCount()