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This commit is contained in:
Chris Girvin 2022-05-16 17:47:59 -04:00
parent df3743c844
commit 087226959c
4 changed files with 21 additions and 15 deletions
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6
exercises/primitive_types/primitive_types1.rs
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@ -2,17 +2,15 @@
// Fill in the rest of the line that has code missing! // Fill in the rest of the line that has code missing!
// No hints, there's no tricks, just get used to typing these :) // No hints, there's no tricks, just get used to typing these :)
// I AM NOT DONE
fn main() { fn main() {
// Booleans (`bool`) // Booleans (`bool`)
let is_morning = true; let is_morning: bool = true;
if is_morning { if is_morning {
println!("Good morning!"); println!("Good morning!");
} }
let // Finish the rest of this line like the example! Or make it be false! let is_evening: bool = true; // Finish the rest of this line like the example! Or make it be false!
if is_evening { if is_evening {
println!("Good evening!"); println!("Good evening!");
} }

10
exercises/primitive_types/primitive_types2.rs
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@ -2,12 +2,10 @@
// Fill in the rest of the line that has code missing! // Fill in the rest of the line that has code missing!
// No hints, there's no tricks, just get used to typing these :) // No hints, there's no tricks, just get used to typing these :)
// I AM NOT DONE
fn main() { fn main() {
// Characters (`char`) // Characters (`char`)
let my_first_initial = 'C'; let my_first_initial: char = 'C';
if my_first_initial.is_alphabetic() { if my_first_initial.is_alphabetic() {
println!("Alphabetical!"); println!("Alphabetical!");
} else if my_first_initial.is_numeric() { } else if my_first_initial.is_numeric() {
@ -16,9 +14,9 @@ fn main() {
println!("Neither alphabetic nor numeric!"); println!("Neither alphabetic nor numeric!");
} }
let // Finish this line like the example! What's your favorite character? let your_character: char = '1'; // Finish this line like the example! What's your favorite character?
// Try a letter, try a number, try a special character, try a character // Try a letter, try a number, try a special character, try a character
// from a different language than your own, try an emoji! // from a different language than your own, try an emoji!
if your_character.is_alphabetic() { if your_character.is_alphabetic() {
println!("Alphabetical!"); println!("Alphabetical!");
} else if your_character.is_numeric() { } else if your_character.is_numeric() {

4
exercises/primitive_types/primitive_types3.rs
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@ -2,10 +2,8 @@
// Create an array with at least 100 elements in it where the ??? is. // Create an array with at least 100 elements in it where the ??? is.
// Execute `rustlings hint primitive_types3` for hints! // Execute `rustlings hint primitive_types3` for hints!
// I AM NOT DONE
fn main() { fn main() {
let a = ??? let a = [0; 100];
if a.len() >= 100 { if a.len() >= 100 {
println!("Wow, that's a big array!"); println!("Wow, that's a big array!");

16
exercises/primitive_types/primitive_types4.rs
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@ -2,13 +2,25 @@
// Get a slice out of Array a where the ??? is so that the test passes. // Get a slice out of Array a where the ??? is so that the test passes.
// Execute `rustlings hint primitive_types4` for hints!! // Execute `rustlings hint primitive_types4` for hints!!
// I AM NOT DONE // // original code
// #[test]
// fn slice_out_of_array() {
// let a = [1, 2, 3, 4, 5];
// let nice_slice = ???
// assert_eq!([2, 3, 4], nice_slice)
// }
// // end of original code
// solution
#[test] #[test]
fn slice_out_of_array() { fn slice_out_of_array() {
let a = [1, 2, 3, 4, 5]; let a = [1, 2, 3, 4, 5];
let nice_slice = ??? // create slice from borrowed array `a`
let nice_slice = &a[1..4];
assert_eq!([2, 3, 4], nice_slice) assert_eq!([2, 3, 4], nice_slice)
} }
// end of solution