Merge pull request rust-num#127 from cuviper/lints

Fix a few miscellaneous lints

Author: cuviper

src/crand.rs

@@ -70,7 +70,8 @@ fn test_rng() -> impl RngCore {
         }
 
         fn try_fill_bytes(&mut self, dest: &mut [u8]) -> Result<(), rand::Error> {
-            Ok(self.fill_bytes(dest))
+            self.fill_bytes(dest);
+            Ok(())
         }
     }
 
@@ -94,7 +95,7 @@ fn generic_standard_f64() {
     let mut rng = test_rng();
     let dist = ComplexDistribution::new(Standard, Standard);
     for _ in 0..100 {
-        let c: Complex<f64> = rng.sample(&dist);
+        let c: Complex<f64> = rng.sample(dist);
         assert!(c.re >= 0.0 && c.re < 1.0);
         assert!(c.im >= 0.0 && c.im < 1.0);
     }
@@ -110,7 +111,7 @@ fn generic_uniform_f64() {
     let dist = ComplexDistribution::new(re, im);
     for _ in 0..100 {
         // no type annotation required, since `Uniform` only produces one type.
-        let c = rng.sample(&dist);
+        let c = rng.sample(dist);
         assert!(c.re >= -100.0 && c.re < 0.0);
         assert!(c.im >= 0.0 && c.im < 100.0);
     }
@@ -125,7 +126,7 @@ fn generic_mixed_f64() {
     let dist = ComplexDistribution::new(re, Standard);
     for _ in 0..100 {
         // no type annotation required, since `Uniform` only produces one type.
-        let c = rng.sample(&dist);
+        let c = rng.sample(dist);
         assert!(c.re >= -100.0 && c.re < 0.0);
         assert!(c.im >= 0.0 && c.im < 1.0);
     }
@@ -141,7 +142,7 @@ fn generic_uniform_i32() {
     let dist = ComplexDistribution::new(re, im);
     for _ in 0..100 {
         // no type annotation required, since `Uniform` only produces one type.
-        let c = rng.sample(&dist);
+        let c = rng.sample(dist);
         assert!(c.re >= -100 && c.re < 0);
         assert!(c.im >= 0 && c.im < 100);
     }

src/lib.rs

@@ -1006,7 +1006,7 @@ impl<T: Clone + Num + Neg<Output = T>> Inv for Complex<T> {
 
     #[inline]
     fn inv(self) -> Self::Output {
-        (&self).inv()
+        Complex::inv(&self)
     }
 }
 
@@ -1015,7 +1015,7 @@ impl<'a, T: Clone + Num + Neg<Output = T>> Inv for &'a Complex<T> {
 
     #[inline]
     fn inv(self) -> Self::Output {
-        self.inv()
+        Complex::inv(self)
     }
 }
 
@@ -1390,7 +1390,6 @@ where
     }
 }
 
-#[allow(deprecated)] // `trim_left_matches` and `trim_right_matches` since 1.33
 fn from_str_generic<T, E, F>(s: &str, from: F) -> Result<Complex<T>, ParseComplexError<E>>
 where
     F: Fn(&str) -> Result<T, E>,
@@ -1412,8 +1411,8 @@ where
         // ignore '+'/'-' if part of an exponent
         if (c == b'+' || c == b'-') && !(p == b'e' || p == b'E') {
             // trim whitespace around the separator
-            a = &s[..=i].trim_right_matches(char::is_whitespace);
-            b = &s[i + 2..].trim_left_matches(char::is_whitespace);
+            a = s[..=i].trim_end_matches(char::is_whitespace);
+            b = s[i + 2..].trim_start_matches(char::is_whitespace);
             neg_b = c == b'-';
 
             if b.is_empty() || (neg_b && b.starts_with('-')) {