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| author | mo8it <mo8it@proton.me> | 2024-07-05 13:39:50 +0200 |
|---|---|---|
| committer | mo8it <mo8it@proton.me> | 2024-07-05 13:39:50 +0200 |
| commit | 7123c7ae3a9605fbe962e4ef0a0f1424cd16fef8 (patch) | |
| tree | c67f7e62bb9a179ae4fdbab492501cb6847e64c7 /exercises/12_options/options1.rs | |
| parent | 77b687d501771c24bd83294d97b8e6f9ffa92d6b (diff) | |
| parent | 4d9c346a173bb722b929f3ea3c00f84954483e24 (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.rs | 47 |
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); - } } |
