Fix typos

Cargo.lock

@@ -151,9 +151,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "4.5.6"
+version = "4.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9689a29b593160de5bc4aacab7b5d54fb52231de70122626c178e6a368994c7"
+checksum = "5db83dced34638ad474f39f250d7fea9598bdd239eaced1bdf45d597da0f433f"
 dependencies = [
  "clap_builder",
  "clap_derive",
@@ -161,9 +161,9 @@ dependencies = [
 
 [[package]]
 name = "clap_builder"
-version = "4.5.6"
+version = "4.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e5387378c84f6faa26890ebf9f0a92989f8873d4d380467bcd0d8d8620424df"
+checksum = "f7e204572485eb3fbf28f871612191521df159bc3e15a9f5064c66dba3a8c05f"
 dependencies = [
  "anstream",
  "anstyle",
@@ -422,9 +422,9 @@ dependencies = [
 
 [[package]]
 name = "memchr"
-version = "2.7.2"
+version = "2.7.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
 
 [[package]]
 name = "mio"
@@ -615,9 +615,9 @@ dependencies = [
 
 [[package]]
 name = "regex"
-version = "1.10.4"
+version = "1.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
+checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -627,9 +627,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.6"
+version = "0.4.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
+checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -638,9 +638,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "adad44e29e4c806119491a7f06f03de4d1af22c3a680dd47f1e6e179439d1f56"
+checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
 
 [[package]]
 name = "rustlings"

Cargo.toml

@@ -47,7 +47,7 @@ include = [
 
 [dependencies]
 anyhow = "1.0.86"
-clap = { version = "4.5.6", features = ["derive"] }
+clap = { version = "4.5.7", features = ["derive"] }
 crossterm = "0.27.0"
 hashbrown = "0.14.5"
 notify-debouncer-mini = { version = "0.4.1", default-features = false }

exercises/01_variables/variables5.rs

@@ -2,7 +2,7 @@ fn main() {
     let number = "T-H-R-E-E"; // Don't change this line
     println!("Spell a number: {}", number);
 
-    // TODO: Fix the compiler error by changing the line below without renaming the the variable.
+    // TODO: Fix the compiler error by changing the line below without renaming the variable.
     number = 3;
     println!("Number plus two is: {}", number + 2);
 }

exercises/04_primitive_types/primitive_types3.rs

@@ -1,5 +1,5 @@
 fn main() {
-    // TODO: Create an array with at least 100 elements in it where the ??? is.
+    // TODO: Create an array called `a` with at least 100 elements in it.
     // let a = ???
 
     if a.len() >= 100 {

exercises/04_primitive_types/primitive_types4.rs

@@ -1,18 +1,15 @@
-// Get a slice out of Array a where the ??? is so that the test passes.
-
 fn main() {
     // You can optionally experiment here.
 }
 
 #[cfg(test)]
 mod tests {
-    use super::*;
-
     #[test]
     fn slice_out_of_array() {
         let a = [1, 2, 3, 4, 5];
 
-        let nice_slice = ???
+        // TODO: Get a slice called `nice_slice` out of the array `a` so that the test passes.
+        // let nice_slice = ???
 
         assert_eq!([2, 3, 4], nice_slice);
     }

rustlings-macros/info.toml

@@ -267,8 +267,8 @@ dir = "04_primitive_types"
 hint = """
 Take a look at the 'Understanding Ownership -> Slices -> Other Slices' section
 of the book: https://doc.rust-lang.org/book/ch04-03-slices.html and use the
-starting and ending (plus one) indices of the items in the `Array` that you
-want to end up in the slice.
+starting and ending (plus one) indices of the items in the array that you want
+to end up in the slice.
 
 If you're curious why the first argument of `assert_eq!` does not have an
 ampersand for a reference since the second argument is a reference, take a look

solutions/04_primitive_types/primitive_types4.rs

@@ -1 +1,23 @@
-// Solutions will be available before the stable release. Thank you for testing the beta version 🥰
+fn main() {
+    // You can optionally experiment here.
+}
+
+#[cfg(test)]
+mod tests {
+    #[test]
+    fn slice_out_of_array() {
+        let a = [1, 2, 3, 4, 5];
+        //       0  1  2  3  4  <- indices
+        //          -------
+        //             |
+        //             +--- slice
+
+        // Note that the upper index 4 is excluded.
+        let nice_slice = &a[1..4];
+        assert_eq!([2, 3, 4], nice_slice);
+
+        // The upper index can be included by using the syntax `..=` (with `=` sign)
+        let nice_slice = &a[1..=3];
+        assert_eq!([2, 3, 4], nice_slice);
+    }
+}

src/main.rs

@@ -151,7 +151,7 @@ fn main() -> Result<()> {
             let notify_exercise_names = if args.manual_run {
                 None
             } else {
-                // For the the notify event handler thread.
+                // For the notify event handler thread.
                 // Leaking is not a problem because the slice lives until the end of the program.
                 Some(
                     &*app_state