From 1113b4a1721b9e32124605ec7e9eefba22400b1b Mon Sep 17 00:00:00 2001
From: Sanjay K <sanjaykdragon@gmail.com>
Date: Mon, 6 Apr 2020 18:50:17 -0400
Subject: [PATCH] added option2
---
exercises/option/option2.rs | 21 +++++++++++++++++++++
info.toml | 10 ++++++++++
2 files changed, 31 insertions(+)
create mode 100644 exercises/option/option2.rs
diff --git a/exercises/option/option2.rs b/exercises/option/option2.rs
new file mode 100644
index 0000000..c673547
--- /dev/null
+++ b/exercises/option/option2.rs
@@ -0,0 +1,21 @@
+// option2.rs
+// Make me compile! Execute `rustlings hint option2` for hints
+
+// I AM NOT DONE
+
+fn main() {
+ let optional_value = String::from("rustlings");
+ if let Some(value) = optional_value {
+ println!("the value of optional value is: {}", value);
+ } else {
+ println!("optional value does not have a value!");
+ }
+
+ let mut optional_values_vec: Vec<Option<i8>> = Vec::new();
+ for x in 1..10 {
+ optional_values_vec.push(x);
+ }
+ while let Some(Some(value)) = optional_values_vec.pop() {
+ println!("current value: {}", value);
+ }
+}
diff --git a/info.toml b/info.toml
index ec8da2c..de31dfe 100644
--- a/info.toml
+++ b/info.toml
@@ -534,6 +534,16 @@ and:
pattern matching
"""
+[[exercises]]
+name = "option2"
+path = "exercises/option/option2.rs"
+mode = "compile"
+hint = """
+check out:
+https://doc.rust-lang.org/rust-by-example/flow_control/if_let.html
+https://doc.rust-lang.org/rust-by-example/flow_control/while_let.html
+"""
+
[[exercises]]
name = "result1"
path = "exercises/error_handling/result1.rs"