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authormo8it <mo8it@proton.me>2024-07-05 13:39:50 +0200
committermo8it <mo8it@proton.me>2024-07-05 13:39:50 +0200
commit7123c7ae3a9605fbe962e4ef0a0f1424cd16fef8 (patch)
treec67f7e62bb9a179ae4fdbab492501cb6847e64c7 /exercises/12_options/options1.rs
parent77b687d501771c24bd83294d97b8e6f9ffa92d6b (diff)
parent4d9c346a173bb722b929f3ea3c00f84954483e24 (diff)
Merge remote-tracking branch 'upstream/main' into fix-enum-variant-inconsistency
Diffstat (limited to 'exercises/12_options/options1.rs')
-rw-r--r--exercises/12_options/options1.rs47
1 files changed, 22 insertions, 25 deletions
diff --git a/exercises/12_options/options1.rs b/exercises/12_options/options1.rs
index e131b48..9964807 100644
--- a/exercises/12_options/options1.rs
+++ b/exercises/12_options/options1.rs
@@ -1,19 +1,13 @@
-// options1.rs
-//
-// Execute `rustlings hint options1` or use the `hint` watch subcommand for a
-// hint.
-
-// I AM NOT DONE
-
// This function returns how much icecream there is left in the fridge.
-// If it's before 10PM, there's 5 pieces left. At 10PM, someone eats them
-// all, so there'll be no more left :(
-fn maybe_icecream(time_of_day: u16) -> Option<u16> {
- // We use the 24-hour system here, so 10PM is a value of 22 and 12AM is a
- // value of 0 The Option output should gracefully handle cases where
- // time_of_day > 23.
- // TODO: Complete the function body - remember to return an Option!
- ???
+// If it's before 22:00 (24-hour system), then 5 scoops are left. At 22:00,
+// someone eats it all, so no icecream is left (value 0). Return `None` if
+// `hour_of_day` is higher than 23.
+fn maybe_icecream(hour_of_day: u16) -> Option<u16> {
+ // TODO: Complete the function body.
+}
+
+fn main() {
+ // You can optionally experiment here.
}
#[cfg(test)]
@@ -21,19 +15,22 @@ mod tests {
use super::*;
#[test]
+ fn raw_value() {
+ // TODO: Fix this test. How do you get the value contained in the
+ // Option?
+ let icecreams = maybe_icecream(12);
+
+ assert_eq!(icecreams, 5); // Don't change this line.
+ }
+
+ #[test]
fn check_icecream() {
+ assert_eq!(maybe_icecream(0), Some(5));
assert_eq!(maybe_icecream(9), Some(5));
- assert_eq!(maybe_icecream(10), Some(5));
- assert_eq!(maybe_icecream(23), Some(0));
+ assert_eq!(maybe_icecream(18), Some(5));
assert_eq!(maybe_icecream(22), Some(0));
+ assert_eq!(maybe_icecream(23), Some(0));
+ assert_eq!(maybe_icecream(24), None);
assert_eq!(maybe_icecream(25), None);
}
-
- #[test]
- fn raw_value() {
- // TODO: Fix this test. How do you get at the value contained in the
- // Option?
- let icecreams = maybe_icecream(12);
- assert_eq!(icecreams, 5);
- }
}