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Made the comments clearer

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Tanish-Eagle
2022-04-02 23:19:14 +05:30
parent e056ca9f79
commit 51734d1a44
1 changed files with 16 additions and 16 deletions
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en/src/variables.md
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@ -4,10 +4,10 @@
1. 🌟 A variable can be used only if it has been initialized. 1. 🌟 A variable can be used only if it has been initialized.
```rust,editable ```rust,editable
// fix the error below with least modifying // Fix the error below with least amount of modification to the code
fn main() { fn main() {
let x: i32; // uninitialized but using, ERROR ! let x: i32; // Uninitialized but used, will result in an ERROR !
let y: i32; // uninitialized but also unusing, only warning let y: i32; // Uninitialized but also unused, will only receive a warning
assert_eq!(x, 5); assert_eq!(x, 5);
println!("Success!") println!("Success!")
@ -17,7 +17,7 @@ fn main() {
2. 🌟 Use `mut` to mark a variable as mutable. 2. 🌟 Use `mut` to mark a variable as mutable.
```rust,editable ```rust,editable
// fill the blanks in code to make it compile // Fill the blanks in the code to make it compile
fn main() { fn main() {
let __ = 1; let __ = 1;
__ += 2; __ += 2;
@ -33,7 +33,7 @@ A scope is the range within the program for which the item is valid.
3. 🌟 3. 🌟
```rust,editable ```rust,editable
// fix the error below with least modifying // Fix the error below with least amount of modification
fn main() { fn main() {
let x: i32 = 10; let x: i32 = 10;
{ {
@ -47,7 +47,7 @@ fn main() {
4. 🌟🌟 4. 🌟🌟
```rust,editable ```rust,editable
// fix the error with using of define_x // Fix the error with the use of define_x
fn main() { fn main() {
println!("{}, world", x); println!("{}, world", x);
} }
@ -63,7 +63,7 @@ You can declare a new variable with the same name as a previous variable, here w
5. 🌟🌟 5. 🌟🌟
```rust,editable ```rust,editable
// only modify `assert_eq!` to make the `println!` work(print `42` in terminal) // Only modify `assert_eq!` to make the `println!` work(print `42` in terminal)
fn main() { fn main() {
let x: i32 = 5; let x: i32 = 5;
{ {
@ -81,17 +81,17 @@ fn main() {
6. 🌟🌟 6. 🌟🌟
```rust,editable ```rust,editable
// remove a line in code to make it compile // Remove a line in the code to make it compile
fn main() { fn main() {
let mut x: i32 = 1; let mut x: i32 = 1;
x = 7; x = 7;
// shadowing and re-binding // Shadowing and re-binding
let x = x; let x = x;
x += 3; x += 3;
let y = 4; let y = 4;
// shadowing // Shadowing
let y = "I can also be bound to text!"; let y = "I can also be bound to text!";
println!("Success!") println!("Success!")
@ -99,10 +99,10 @@ fn main() {
``` ```
### Unused variables ### Unused variables
1. fix the warning below with : 1. Fix the warning below with :
- 🌟 only one solution - 🌟 Only one solution
- 🌟🌟 two distinct solutions - 🌟🌟 Two distinct solutions
> Note: none of the solutions is to remove the line `let x = 1` > Note: none of the solutions is to remove the line `let x = 1`
@ -112,7 +112,7 @@ fn main() {
let x = 1; let x = 1;
} }
// warning: unused variable: `x` // Warning: unused variable: `x`
``` ```
### Destructuring ### Destructuring
@ -122,7 +122,7 @@ fn main() {
```rust,editable ```rust,editable
// fix the error below with least modifying // Fix the error below with least amount of modification
fn main() { fn main() {
let (x, y) = (1, 2); let (x, y) = (1, 2);
x += 2; x += 2;
@ -147,7 +147,7 @@ fn main() {
let (x, y); let (x, y);
(x,..) = (3, 4); (x,..) = (3, 4);
[.., y] = [1, 2]; [.., y] = [1, 2];
// fill the blank to make the code work // Fill the blank to make the code work
assert_eq!([x,y], __); assert_eq!([x,y], __);
println!("Success!") println!("Success!")