From 4582eda5cddf52c69e1b2a7f6c7079b701c7e9eb Mon Sep 17 00:00:00 2001
From: lukaszKielar <kielar.lukasz@hotmail.com>
Date: Mon, 29 Jun 2020 22:44:52 +0200
Subject: [PATCH] finish iterators2 exercise
---
exercises/standard_library_types/iterators2.rs | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/exercises/standard_library_types/iterators2.rs b/exercises/standard_library_types/iterators2.rs
index 837725f..c9d1f86 100644
--- a/exercises/standard_library_types/iterators2.rs
+++ b/exercises/standard_library_types/iterators2.rs
@@ -7,13 +7,11 @@
// Try to ensure it returns a single string.
// As always, there are hints if you execute `rustlings hint iterators2`!
-// I AM NOT DONE
-
pub fn capitalize_first(input: &str) -> String {
let mut c = input.chars();
match c.next() {
None => String::new(),
- Some(first) => first.collect::<String>() + c.as_str(),
+ Some(first) => first.to_uppercase().collect::<String>() + c.as_str(),
}
}
@@ -37,14 +35,15 @@ mod tests {
#[test]
fn test_iterate_string_vec() {
let words = vec!["hello", "world"];
- let capitalized_words: Vec<String> = // TODO
+ let capitalized_words: Vec<String> = words.into_iter().map(capitalize_first).collect();
assert_eq!(capitalized_words, ["Hello", "World"]);
}
#[test]
+ #[ignore]
fn test_iterate_into_string() {
let words = vec!["hello", " ", "world"];
- let capitalized_words = // TODO
+ let capitalized_words = words.into_iter().map(capitalize_first).collect::<String>();
assert_eq!(capitalized_words, "Hello World");
}
}