From 871de4d7202787f8a4515953bad08bd7f86acf58 Mon Sep 17 00:00:00 2001
From: Eri Mendz <erimendz@gmail.com>
Date: Tue, 25 May 2021 16:52:12 +0300
Subject: [PATCH] add solutions to exercise primitives_types
---
exercises/primitive_types/primitive_types1.rs | 4 ++--
exercises/primitive_types/primitive_types2.rs | 5 +++--
exercises/primitive_types/primitive_types3.rs | 17 +++++++++++++++--
exercises/primitive_types/primitive_types4.rs | 5 +++--
exercises/primitive_types/primitive_types5.rs | 5 +++--
exercises/primitive_types/primitive_types6.rs | 4 ++--
6 files changed, 28 insertions(+), 12 deletions(-)
diff --git a/exercises/primitive_types/primitive_types1.rs b/exercises/primitive_types/primitive_types1.rs
index 0912139..186cd58 100644
--- a/exercises/primitive_types/primitive_types1.rs
+++ b/exercises/primitive_types/primitive_types1.rs
@@ -2,7 +2,7 @@
// Fill in the rest of the line that has code missing!
// No hints, there's no tricks, just get used to typing these :)
-// I AM NOT DONE
+// may 25/21 DONE
fn main() {
// Booleans (`bool`)
@@ -12,7 +12,7 @@ fn main() {
println!("Good morning!");
}
- let // Finish the rest of this line like the example! Or make it be false!
+ let is_evening = false;
if is_evening {
println!("Good evening!");
}
diff --git a/exercises/primitive_types/primitive_types2.rs b/exercises/primitive_types/primitive_types2.rs
index 6576a4d..fa1d1cb 100644
--- a/exercises/primitive_types/primitive_types2.rs
+++ b/exercises/primitive_types/primitive_types2.rs
@@ -2,7 +2,7 @@
// Fill in the rest of the line that has code missing!
// No hints, there's no tricks, just get used to typing these :)
-// I AM NOT DONE
+// done may 25/21
fn main() {
// Characters (`char`)
@@ -16,7 +16,8 @@ fn main() {
println!("Neither alphabetic nor numeric!");
}
- let // Finish this line like the example! What's your favorite character?
+ //let // Finish this line like the example! What's your favorite character?
+ let your_character = '&';
// Try a letter, try a number, try a special character, try a character
// from a different language than your own, try an emoji!
if your_character.is_alphabetic() {
diff --git a/exercises/primitive_types/primitive_types3.rs b/exercises/primitive_types/primitive_types3.rs
index aaa518b..1bdf970 100644
--- a/exercises/primitive_types/primitive_types3.rs
+++ b/exercises/primitive_types/primitive_types3.rs
@@ -2,14 +2,27 @@
// Create an array with at least 100 elements in it where the ??? is.
// Execute `rustlings hint primitive_types3` for hints!
-// I AM NOT DONE
+// may 25/21 DONE
fn main() {
- let a = ???
+ // create array of type i32 having 120 elements
+ let a: [i32; 120] = [0; 120];
if a.len() >= 100 {
println!("Wow, that's a big array!");
+ //println!("the number of elements in array: {}", a.len());
+ //make function to borrow whole array as slice
+ analyze_slice(&a);
+ //slice can point to a section of array
+ println!("borrow a section of the array as a slice");
+ analyze_slice(&a[0 .. 10]);
} else {
println!("Meh, I eat arrays like that for breakfast.");
}
}
+// this function borrows a slice
+fn analyze_slice(slice: &[i32]) {
+ println!("slice first element: {}", slice[0]);
+ println!("borrowed slice has {} elements", slice.len());
+
+}
\ No newline at end of file
diff --git a/exercises/primitive_types/primitive_types4.rs b/exercises/primitive_types/primitive_types4.rs
index 10b553e..83027d7 100644
--- a/exercises/primitive_types/primitive_types4.rs
+++ b/exercises/primitive_types/primitive_types4.rs
@@ -2,13 +2,14 @@
// Get a slice out of Array a where the ??? is so that the test passes.
// Execute `rustlings hint primitive_types4` for hints!!
-// I AM NOT DONE
+// May 25/21 DONE
#[test]
fn slice_out_of_array() {
let a = [1, 2, 3, 4, 5];
- let nice_slice = ???
+ let nice_slice = &a[1 .. 4];
+ //println!("value is {:#?}", nice_slice);
assert_eq!([2, 3, 4], nice_slice)
}
diff --git a/exercises/primitive_types/primitive_types5.rs b/exercises/primitive_types/primitive_types5.rs
index 680d8d2..2dbf057 100644
--- a/exercises/primitive_types/primitive_types5.rs
+++ b/exercises/primitive_types/primitive_types5.rs
@@ -2,11 +2,12 @@
// Destructure the `cat` tuple so that the println will work.
// Execute `rustlings hint primitive_types5` for hints!
-// I AM NOT DONE
+// may 25/21 DONE
fn main() {
let cat = ("Furry McFurson", 3.5);
- let /* your pattern here */ = cat;
+ //let /* your pattern here */ = cat;
+ let (name, age) = cat;
println!("{} is {} years old.", name, age);
}
diff --git a/exercises/primitive_types/primitive_types6.rs b/exercises/primitive_types/primitive_types6.rs
index b8c9b82..7378363 100644
--- a/exercises/primitive_types/primitive_types6.rs
+++ b/exercises/primitive_types/primitive_types6.rs
@@ -3,13 +3,13 @@
// You can put the expression for the second element where ??? is so that the test passes.
// Execute `rustlings hint primitive_types6` for hints!
-// I AM NOT DONE
+// may 25/21 DONE
#[test]
fn indexing_tuple() {
let numbers = (1, 2, 3);
// Replace below ??? with the tuple indexing syntax.
- let second = ???;
+ let second = numbers.1;
assert_eq!(2, second,
"This is not the 2nd number in the tuple!")