Suppress unused in doc examples

Author: Serial-ATA

clippy_lints/src/casts/mod.rs

@@ -220,15 +220,13 @@ declare_clippy_lint! {
     /// ### Example
     /// ```rust
     /// fn fun() -> i32 { 1 }
-    /// # let _ =
-    /// fun as i64;
+    /// let _ = fun as i64;
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// # fn fun() -> i32 { 1 }
-    /// # let _ =
-    /// fun as usize;
+    /// let _ = fun as usize;
     /// ```
     #[clippy::version = "pre 1.29.0"]
     pub FN_TO_NUMERIC_CAST,
@@ -251,8 +249,7 @@ declare_clippy_lint! {
     /// fn fn1() -> i16 {
     ///     1
     /// };
-    /// # let _ =
-    /// fn1 as i32;
+    /// let _ = fn1 as i32;
     /// ```
     ///
     /// Use instead:
@@ -287,8 +284,7 @@ declare_clippy_lint! {
     /// fn fn1() -> u16 {
     ///     1
     /// };
-    /// # let _ =
-    /// fn1 as usize;
+    /// let _ = fn1 as usize;
     /// ```
     ///
     /// Use instead:
@@ -297,17 +293,15 @@ declare_clippy_lint! {
     /// fn fn2() -> u16 {
     ///     1
     /// };
-    /// # let _ =
-    /// fn2() as usize;
+    /// let _ = fn2() as usize;
     ///
     /// // or
     ///
     /// // maybe you intended to cast it to a function type?
     /// fn fn3() -> u16 {
     ///     1
     /// }
-    /// # let _ =
-    /// fn3 as fn() -> u16;
+    /// let _ = fn3 as fn() -> u16;
     /// ```
     #[clippy::version = "1.58.0"]
     pub FN_TO_NUMERIC_CAST_ANY,

clippy_lints/src/checked_conversions.rs

@@ -22,18 +22,14 @@ declare_clippy_lint! {
     /// ### Example
     /// ```rust
     /// # let foo: u32 = 5;
-    /// # let _ =
-    /// foo <= i32::MAX as u32
-    /// # ;
+    /// foo <= i32::MAX as u32;
     /// ```
     ///
-    /// Could be written:
-    ///
+    /// Use instead:
     /// ```rust
     /// # let foo = 1;
-    /// # let _ =
-    /// i32::try_from(foo).is_ok()
-    /// # ;
+    /// # #[allow(unused)]
+    /// i32::try_from(foo).is_ok();
     /// ```
     #[clippy::version = "1.37.0"]
     pub CHECKED_CONVERSIONS,

clippy_lints/src/indexing_slicing.rs

@@ -67,16 +67,14 @@ declare_clippy_lint! {
     ///
     /// Use instead:
     /// ```rust
+    /// # #![allow(unused)]
+    ///
     /// # let x = vec![0; 5];
     /// # let y = [0, 1, 2, 3];
-    /// # let _ =
     /// x.get(2);
-    /// # let _ =
     /// x.get(2..100);
     ///
-    /// # let _ =
     /// y.get(10);
-    /// # let _ =
     /// y.get(10..100);
     /// ```
     #[clippy::version = "pre 1.29.0"]

clippy_lints/src/infinite_iter.rs

@@ -41,7 +41,7 @@ declare_clippy_lint! {
     /// ### Example
     /// ```rust
     /// let infinite_iter = 0..;
-    /// # let _ =
+    /// # #[allow(unused)]
     /// [0..].iter().zip(infinite_iter.take_while(|x| *x > 5));
     /// ```
     #[clippy::version = "pre 1.29.0"]

clippy_lints/src/methods/mod.rs

@@ -131,18 +131,14 @@ declare_clippy_lint! {
     /// ### Examples
     /// ```rust
     /// # let vec = vec!["string".to_string()];
-    /// # let _ =
     /// vec.iter().cloned().take(10);
-    /// # let _ =
     /// vec.iter().cloned().last();
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// # let vec = vec!["string".to_string()];
-    /// # let _ =
     /// vec.iter().take(10).cloned();
-    /// # let _ =
     /// vec.iter().last().cloned();
     /// ```
     #[clippy::version = "1.59.0"]
@@ -590,7 +586,6 @@ declare_clippy_lint! {
     /// let vec = vec![vec![1]];
     /// let opt = Some(5);
     ///
-    /// # let _ =
     /// vec.iter().map(|x| x.iter()).flatten();
     /// opt.map(|x| Some(x * 2)).flatten();
     /// ```
@@ -599,7 +594,6 @@ declare_clippy_lint! {
     /// ```rust
     /// # let vec = vec![vec![1]];
     /// # let opt = Some(5);
-    /// # let _ =
     /// vec.iter().flat_map(|x| x.iter());
     /// opt.and_then(|x| Some(x * 2));
     /// ```
@@ -620,15 +614,15 @@ declare_clippy_lint! {
     ///
      /// ### Example
     /// ```rust
-    /// # let  _ =
+    /// # #![allow(unused)]
     /// (0_i32..10)
     ///     .filter(|n| n.checked_add(1).is_some())
     ///     .map(|n| n.checked_add(1).unwrap());
     /// ```
     ///
     /// Use instead:
     /// ```rust
-    /// # let _ =
+    /// # #[allow(unused)]
     /// (0_i32..10).filter_map(|n| n.checked_add(1));
     /// ```
     #[clippy::version = "1.51.0"]
@@ -721,11 +715,10 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
+    /// # #![allow(unused)]
     /// let vec = vec![1];
-    /// # let _ =
     /// vec.iter().find(|x| **x == 0).is_some();
     ///
-    /// # let _ =
     /// "hello world".find("world").is_none();
     /// ```
     ///
@@ -734,7 +727,7 @@ declare_clippy_lint! {
     /// let vec = vec![1];
     /// vec.iter().any(|x| *x == 0);
     ///
-    /// # let _ =
+    /// # #[allow(unused)]
     /// !"hello world".contains("world");
     /// ```
     #[clippy::version = "pre 1.29.0"]
@@ -1428,13 +1421,12 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
-    /// # let _ =
+    /// # #[allow(unused)]
     /// (0..3).fold(false, |acc, x| acc || x > 2);
     /// ```
     ///
     /// Use instead:
     /// ```rust
-    /// # let _ =
     /// (0..3).any(|x| x > 2);
     /// ```
     #[clippy::version = "pre 1.29.0"]
@@ -1515,14 +1507,14 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
-    /// # let _ =
-    /// (&vec![3, 4, 5]).into_iter();
+    /// # let vec = vec![3, 4, 5];
+    /// (&vec).into_iter();
     /// ```
     ///
     /// Use instead:
     /// ```rust
-    /// # let _ =
-    /// (&vec![3, 4, 5]).iter();
+    /// # let vec = vec![3, 4, 5];
+    /// (&vec).iter();
     /// ```
     #[clippy::version = "1.32.0"]
     pub INTO_ITER_ON_REF,
@@ -1931,13 +1923,13 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
-    /// # let _ =
+    /// # #[allow(unused)]
     /// "Hello".bytes().nth(3);
     /// ```
     ///
     /// Use instead:
     /// ```rust
-    /// # let _ =
+    /// # #[allow(unused)]
     /// "Hello".as_bytes().get(3);
     /// ```
     #[clippy::version = "1.52.0"]
@@ -1982,19 +1974,18 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
+    /// # #![allow(unused)]
     /// let some_vec = vec![0, 1, 2, 3];
-    /// # let _ =
+    ///
     /// some_vec.iter().count();
-    /// # let _ =
     /// &some_vec[..].iter().count();
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// let some_vec = vec![0, 1, 2, 3];
-    /// # let _ =
+    ///
     /// some_vec.len();
-    /// # let _ =
     /// &some_vec[..].len();
     /// ```
     #[clippy::version = "1.52.0"]

clippy_lints/src/needless_borrowed_ref.rs

@@ -29,14 +29,14 @@ declare_clippy_lint! {
     /// ### Example
     /// ```rust
     /// let mut v = Vec::<String>::new();
-    /// # let _ =
+    /// # #[allow(unused)]
     /// v.iter_mut().filter(|&ref a| a.is_empty());
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// let mut v = Vec::<String>::new();
-    /// # let _ =
+    /// # #[allow(unused)]
     /// v.iter_mut().filter(|a| a.is_empty());
     /// ```
     #[clippy::version = "pre 1.29.0"]

clippy_lints/src/ranges.rs

@@ -27,15 +27,13 @@ declare_clippy_lint! {
     /// ### Example
     /// ```rust
     /// # let x = vec![1];
-    /// # let _ =
-    /// x.iter().zip(0..x.len());
+    /// let _ = x.iter().zip(0..x.len());
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// # let x = vec![1];
-    /// # let _ =
-    /// x.iter().enumerate();
+    /// let _ = x.iter().enumerate();
     /// ```
     #[clippy::version = "pre 1.29.0"]
     pub RANGE_ZIP_WITH_LEN,

clippy_lints/src/strings.rs

@@ -224,13 +224,11 @@ declare_clippy_lint! {
     ///
     /// ### Example
     /// ```rust
-    /// # let _ =
     /// std::str::from_utf8(&"Hello World!".as_bytes()[6..11]).unwrap();
     /// ```
     ///
     /// Use instead:
     /// ```rust
-    /// # let _ =
     /// &"Hello World!"[6..11];
     /// ```
     #[clippy::version = "1.50.0"]

clippy_lints/src/write.rs

@@ -178,15 +178,13 @@ declare_clippy_lint! {
     /// ```rust
     /// # use std::fmt::Write;
     /// # let mut buf = String::new();
-    /// # let _ =
     /// writeln!(buf, "");
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// # use std::fmt::Write;
     /// # let mut buf = String::new();
-    /// # let _ =
     /// writeln!(buf);
     /// ```
     #[clippy::version = "pre 1.29.0"]
@@ -210,7 +208,6 @@ declare_clippy_lint! {
     /// # use std::fmt::Write;
     /// # let mut buf = String::new();
     /// # let name = "World";
-    /// # let _ =
     /// write!(buf, "Hello {}!\n", name);
     /// ```
     ///
@@ -219,7 +216,6 @@ declare_clippy_lint! {
     /// # use std::fmt::Write;
     /// # let mut buf = String::new();
     /// # let name = "World";
-    /// # let _ =
     /// writeln!(buf, "Hello {}!", name);
     /// ```
     #[clippy::version = "pre 1.29.0"]
@@ -245,15 +241,13 @@ declare_clippy_lint! {
     /// ```rust
     /// # use std::fmt::Write;
     /// # let mut buf = String::new();
-    /// # let _ =
     /// writeln!(buf, "{}", "foo");
     /// ```
     ///
     /// Use instead:
     /// ```rust
     /// # use std::fmt::Write;
     /// # let mut buf = String::new();
-    /// # let _ =
     /// writeln!(buf, "foo");
     /// ```
     #[clippy::version = "pre 1.29.0"]