From 9f15c1bfee7153fe02c2e9c280da10052b744e81 Mon Sep 17 00:00:00 2001
From: Hussain <huss4in7@outlook.com>
Date: Thu, 12 Sep 2024 03:07:13 +0300
Subject: [PATCH] fix: showing unnecessary `x is never used` warnings

---
 exercises/03_if/if1.rs                         | 2 ++
 exercises/03_if/if2.rs                         | 2 ++
 exercises/03_if/if3.rs                         | 2 ++
 exercises/05_vecs/vecs1.rs                     | 2 ++
 exercises/05_vecs/vecs2.rs                     | 2 ++
 exercises/06_move_semantics/move_semantics1.rs | 2 ++
 exercises/06_move_semantics/move_semantics2.rs | 2 ++
 exercises/06_move_semantics/move_semantics3.rs | 2 ++
 exercises/07_structs/structs1.rs               | 2 ++
 exercises/07_structs/structs2.rs               | 2 ++
 exercises/07_structs/structs3.rs               | 2 ++
 exercises/08_enums/enums3.rs                   | 2 ++
 exercises/11_hashmaps/hashmaps2.rs             | 2 ++
 exercises/11_hashmaps/hashmaps3.rs             | 2 ++
 exercises/13_error_handling/errors1.rs         | 2 ++
 exercises/13_error_handling/errors4.rs         | 2 ++
 exercises/13_error_handling/errors6.rs         | 2 ++
 exercises/14_generics/generics2.rs             | 2 ++
 exercises/15_traits/traits2.rs                 | 2 ++
 exercises/17_tests/tests1.rs                   | 2 ++
 exercises/17_tests/tests2.rs                   | 2 ++
 exercises/17_tests/tests3.rs                   | 2 ++
 exercises/18_iterators/iterators3.rs           | 2 ++
 exercises/19_smart_pointers/cow1.rs            | 2 ++
 exercises/19_smart_pointers/rc1.rs             | 2 ++
 exercises/quizzes/quiz1.rs                     | 2 ++
 exercises/quizzes/quiz2.rs                     | 2 ++
 exercises/quizzes/quiz3.rs                     | 2 ++
 28 files changed, 56 insertions(+)

diff --git a/exercises/03_if/if1.rs b/exercises/03_if/if1.rs
index e5a3c5a5..9019f165 100644
--- a/exercises/03_if/if1.rs
+++ b/exercises/03_if/if1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 fn bigger(a: i32, b: i32) -> i32 {
     // TODO: Complete this function to return the bigger number!
     // If both numbers are equal, any of them can be returned.
diff --git a/exercises/03_if/if2.rs b/exercises/03_if/if2.rs
index 593a77a7..9b06e792 100644
--- a/exercises/03_if/if2.rs
+++ b/exercises/03_if/if2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // TODO: Fix the compiler error on this function.
 fn foo_if_fizz(fizzish: &str) -> &str {
     if fizzish == "fizz" {
diff --git a/exercises/03_if/if3.rs b/exercises/03_if/if3.rs
index 89164eb2..c0597302 100644
--- a/exercises/03_if/if3.rs
+++ b/exercises/03_if/if3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 fn animal_habitat(animal: &str) -> &str {
     // TODO: Fix the compiler error in the statement below.
     let identifier = if animal == "crab" {
diff --git a/exercises/05_vecs/vecs1.rs b/exercises/05_vecs/vecs1.rs
index 68e1affa..d115dcc7 100644
--- a/exercises/05_vecs/vecs1.rs
+++ b/exercises/05_vecs/vecs1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 fn array_and_vec() -> ([i32; 4], Vec<i32>) {
     let a = [10, 20, 30, 40]; // Array
 
diff --git a/exercises/05_vecs/vecs2.rs b/exercises/05_vecs/vecs2.rs
index a9be2580..09d57c32 100644
--- a/exercises/05_vecs/vecs2.rs
+++ b/exercises/05_vecs/vecs2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 fn vec_loop(input: &[i32]) -> Vec<i32> {
     let mut output = Vec::new();
 
diff --git a/exercises/06_move_semantics/move_semantics1.rs b/exercises/06_move_semantics/move_semantics1.rs
index 4eb3d618..59a88d74 100644
--- a/exercises/06_move_semantics/move_semantics1.rs
+++ b/exercises/06_move_semantics/move_semantics1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // TODO: Fix the compiler error in this function.
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
     let vec = vec;
diff --git a/exercises/06_move_semantics/move_semantics2.rs b/exercises/06_move_semantics/move_semantics2.rs
index a3ab7a0f..f32efa41 100644
--- a/exercises/06_move_semantics/move_semantics2.rs
+++ b/exercises/06_move_semantics/move_semantics2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
     let mut vec = vec;
 
diff --git a/exercises/06_move_semantics/move_semantics3.rs b/exercises/06_move_semantics/move_semantics3.rs
index 11dbbbeb..cba11289 100644
--- a/exercises/06_move_semantics/move_semantics3.rs
+++ b/exercises/06_move_semantics/move_semantics3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // TODO: Fix the compiler error in the function without adding any new line.
 fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
     vec.push(88);
diff --git a/exercises/07_structs/structs1.rs b/exercises/07_structs/structs1.rs
index 959c4c6a..f0928c32 100644
--- a/exercises/07_structs/structs1.rs
+++ b/exercises/07_structs/structs1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 struct ColorRegularStruct {
     // TODO: Add the fields that the test `regular_structs` expects.
     // What types should the fields have? What are the minimum and maximum values for RGB colors?
diff --git a/exercises/07_structs/structs2.rs b/exercises/07_structs/structs2.rs
index 79141af9..fbf25adc 100644
--- a/exercises/07_structs/structs2.rs
+++ b/exercises/07_structs/structs2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 #[derive(Debug)]
 struct Order {
     name: String,
diff --git a/exercises/07_structs/structs3.rs b/exercises/07_structs/structs3.rs
index 69e5ced7..d371093b 100644
--- a/exercises/07_structs/structs3.rs
+++ b/exercises/07_structs/structs3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // Structs contain data, but can also have logic. In this exercise, we have
 // defined the `Package` struct, and we want to test some logic attached to it.
 
diff --git a/exercises/08_enums/enums3.rs b/exercises/08_enums/enums3.rs
index 66c4675f..5c3221dd 100644
--- a/exercises/08_enums/enums3.rs
+++ b/exercises/08_enums/enums3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 struct Point {
     x: u64,
     y: u64,
diff --git a/exercises/11_hashmaps/hashmaps2.rs b/exercises/11_hashmaps/hashmaps2.rs
index e9f53fea..ba29765c 100644
--- a/exercises/11_hashmaps/hashmaps2.rs
+++ b/exercises/11_hashmaps/hashmaps2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // We're collecting different fruits to bake a delicious fruit cake. For this,
 // we have a basket, which we'll represent in the form of a hash map. The key
 // represents the name of each fruit we collect and the value represents how
diff --git a/exercises/11_hashmaps/hashmaps3.rs b/exercises/11_hashmaps/hashmaps3.rs
index 7e9584d1..c8475fc2 100644
--- a/exercises/11_hashmaps/hashmaps3.rs
+++ b/exercises/11_hashmaps/hashmaps3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // A list of scores (one per line) of a soccer match is given. Each line is of
 // the form "<team_1_name>,<team_2_name>,<team_1_goals>,<team_2_goals>"
 // Example: "England,France,4,2" (England scored 4 goals, France 2).
diff --git a/exercises/13_error_handling/errors1.rs b/exercises/13_error_handling/errors1.rs
index e07fddc3..eadf809a 100644
--- a/exercises/13_error_handling/errors1.rs
+++ b/exercises/13_error_handling/errors1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // TODO: This function refuses to generate text to be printed on a nametag if
 // you pass it an empty string. It'd be nicer if it explained what the problem
 // was instead of just returning `None`. Thankfully, Rust has a similar
diff --git a/exercises/13_error_handling/errors4.rs b/exercises/13_error_handling/errors4.rs
index ba01e54b..264bc9c6 100644
--- a/exercises/13_error_handling/errors4.rs
+++ b/exercises/13_error_handling/errors4.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 #[derive(PartialEq, Debug)]
 enum CreationError {
     Negative,
diff --git a/exercises/13_error_handling/errors6.rs b/exercises/13_error_handling/errors6.rs
index b1995e03..4c34deb7 100644
--- a/exercises/13_error_handling/errors6.rs
+++ b/exercises/13_error_handling/errors6.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // Using catch-all error types like `Box<dyn Error>` isn't recommended for
 // library code where callers might want to make decisions based on the error
 // content instead of printing it out or propagating it further. Here, we define
diff --git a/exercises/14_generics/generics2.rs b/exercises/14_generics/generics2.rs
index 8908725b..d7df51c7 100644
--- a/exercises/14_generics/generics2.rs
+++ b/exercises/14_generics/generics2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // This powerful wrapper provides the ability to store a positive integer value.
 // TODO: Rewrite it using a generic so that it supports wrapping ANY type.
 struct Wrapper {
diff --git a/exercises/15_traits/traits2.rs b/exercises/15_traits/traits2.rs
index d724dc28..d856cb82 100644
--- a/exercises/15_traits/traits2.rs
+++ b/exercises/15_traits/traits2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 trait AppendBar {
     fn append_bar(self) -> Self;
 }
diff --git a/exercises/17_tests/tests1.rs b/exercises/17_tests/tests1.rs
index 7529f9f0..954d1bc0 100644
--- a/exercises/17_tests/tests1.rs
+++ b/exercises/17_tests/tests1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // Tests are important to ensure that your code does what you think it should
 // do.
 
diff --git a/exercises/17_tests/tests2.rs b/exercises/17_tests/tests2.rs
index 0c6573e8..d9f1a507 100644
--- a/exercises/17_tests/tests2.rs
+++ b/exercises/17_tests/tests2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // Calculates the power of 2 using a bit shift.
 // `1 << n` is equivalent to "2 to the power of n".
 fn power_of_2(n: u8) -> u64 {
diff --git a/exercises/17_tests/tests3.rs b/exercises/17_tests/tests3.rs
index 822184ef..559d02bf 100644
--- a/exercises/17_tests/tests3.rs
+++ b/exercises/17_tests/tests3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 struct Rectangle {
     width: i32,
     height: i32,
diff --git a/exercises/18_iterators/iterators3.rs b/exercises/18_iterators/iterators3.rs
index 6b1eca17..077dd8a5 100644
--- a/exercises/18_iterators/iterators3.rs
+++ b/exercises/18_iterators/iterators3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 #[derive(Debug, PartialEq, Eq)]
 enum DivisionError {
     // Example: 42 / 0
diff --git a/exercises/19_smart_pointers/cow1.rs b/exercises/19_smart_pointers/cow1.rs
index 15665007..4a749de3 100644
--- a/exercises/19_smart_pointers/cow1.rs
+++ b/exercises/19_smart_pointers/cow1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // This exercise explores the `Cow` (Clone-On-Write) smart pointer. It can
 // enclose and provide immutable access to borrowed data and clone the data
 // lazily when mutation or ownership is required. The type is designed to work
diff --git a/exercises/19_smart_pointers/rc1.rs b/exercises/19_smart_pointers/rc1.rs
index 48e19dc0..4d6b6457 100644
--- a/exercises/19_smart_pointers/rc1.rs
+++ b/exercises/19_smart_pointers/rc1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // In this exercise, we want to express the concept of multiple owners via the
 // `Rc<T>` type. This is a model of our solar system - there is a `Sun` type and
 // multiple `Planet`s. The planets take ownership of the sun, indicating that
diff --git a/exercises/quizzes/quiz1.rs b/exercises/quizzes/quiz1.rs
index 04fb2aaf..41620d21 100644
--- a/exercises/quizzes/quiz1.rs
+++ b/exercises/quizzes/quiz1.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // This is a quiz for the following sections:
 // - Variables
 // - Functions
diff --git a/exercises/quizzes/quiz2.rs b/exercises/quizzes/quiz2.rs
index 2cddba90..c575aacf 100644
--- a/exercises/quizzes/quiz2.rs
+++ b/exercises/quizzes/quiz2.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // This is a quiz for the following sections:
 // - Strings
 // - Vecs
diff --git a/exercises/quizzes/quiz3.rs b/exercises/quizzes/quiz3.rs
index c877c5f8..3f728237 100644
--- a/exercises/quizzes/quiz3.rs
+++ b/exercises/quizzes/quiz3.rs
@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 // This quiz tests:
 // - Generics
 // - Traits