From 9642f5a3f686270a4f8f6ba969919ddbbc4f7fdd Mon Sep 17 00:00:00 2001
From: Mukund Bhudia <mukund_bhudia@hotmail.com>
Date: Tue, 4 Aug 2020 12:57:01 +0100
Subject: [PATCH] feat: Added iterators1.rs exercise
---
exercises/standard_library_types/README.md | 2 --
.../standard_library_types/iterators1.rs | 24 +++++++++++++++++++
info.toml | 21 ++++++++++++++++
3 files changed, 45 insertions(+), 2 deletions(-)
create mode 100644 exercises/standard_library_types/iterators1.rs
diff --git a/exercises/standard_library_types/README.md b/exercises/standard_library_types/README.md
index 36b30c1f..8b53dd81 100644
--- a/exercises/standard_library_types/README.md
+++ b/exercises/standard_library_types/README.md
@@ -3,5 +3,3 @@ For the Box exercise check out the chapter [Using Box to Point to Data on the He
For the Arc exercise check out the chapter [Shared-State Concurrency](https://doc.rust-lang.org/book/ch16-03-shared-state.html) of the Rust Book.
For the Iterator exercise check out the chapters [Iterator](https://doc.rust-lang.org/book/ch13-02-iterators.html) of the Rust Book and the [Iterator documentation](https://doc.rust-lang.org/stable/std/iter/).
-Do not adjust your monitors-- iterators1.rs is indeed missing. Iterators is a challenging topic, so we're leaving space for a simpler exercise!
-
diff --git a/exercises/standard_library_types/iterators1.rs b/exercises/standard_library_types/iterators1.rs
new file mode 100644
index 00000000..3fd519d6
--- /dev/null
+++ b/exercises/standard_library_types/iterators1.rs
@@ -0,0 +1,24 @@
+// iterators1.rs
+//
+// Make me compile by filling in the `???`s
+//
+// When performing operations on elements within a collection, iterators are essential.
+// This module helps you get familiar with the structure of using an iterator and
+// how to go through elements within an iterable collection.
+//
+// Execute `rustlings hint iterators1` for hints :D
+
+// I AM NOT DONE
+
+fn main () {
+ let my_fav_fruits = vec!["banana", "custard apple", "avocado", "peach", "raspberry"];
+
+ let mut my_iterable_fav_fruits = ???; // TODO: Step 1
+
+ assert_eq!(my_iterable_fav_fruits.next(), Some(&"banana"));
+ assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 2
+ assert_eq!(my_iterable_fav_fruits.next(), Some(&"avocado"));
+ assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 2.1
+ assert_eq!(my_iterable_fav_fruits.next(), Some(&"raspberry"));
+ assert_eq!(my_iterable_fav_fruits.next(), ???); // TODO: Step 3
+}
diff --git a/info.toml b/info.toml
index 46e353ff..23f92bf5 100644
--- a/info.toml
+++ b/info.toml
@@ -644,6 +644,27 @@ inside the loop but still in the main thread.
`child_numbers` should be a clone of the Arc of the numbers instead of a
thread-local copy of the numbers."""
+[[exercises]]
+name = "iterators1"
+path = "exercises/standard_library_types/iterators1.rs"
+mode = "compile"
+hint = """
+Step 1:
+We need to apply something to the collection `my_fav_fruits` before we start to go through
+it. What could that be? Take a look at the struct definition for a vector for inspiration:
+https://doc.rust-lang.org/std/vec/struct.Vec.html.
+
+
+Step 2 & step 2.1:
+Very similar to the lines above an below. You've got this!
+
+
+Step 3:
+An iterator goes through all elements in a collection, but what if we've run out of
+elements? What should we expect here? If you're stuck, take a look at
+https://doc.rust-lang.org/std/iter/trait.Iterator.html for some ideas.
+"""
+
[[exercises]]
name = "iterators2"
path = "exercises/standard_library_types/iterators2.rs"