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AF 2024-09-15 21:00:03 +00:00
parent f373feb7c4
commit df8e885c7e
Signed by: alisa
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1 changed files with 13 additions and 9 deletions
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22
src/exercises/get_functions.md
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@ -8,18 +8,20 @@ struct Functions {
increment: fn(i32) -> i32,
}
fn get_functions() -> &'static Functions {
fn get_functions<const STEP: i32>() -> &'static Functions {
# /*
let five = || 5;
let increment = |n| n + 1;
let increment = |n| n + STEP;
let functions = Functions { five, increment };
&functions
# */
# &Functions { five: || 5, increment: |n| n + 1 }
# &Functions { five: || 5, increment: |n| n + STEP }
}
assert_eq!((get_functions().five)(), 5);
assert_eq!((get_functions().increment)(4), 5);
assert_eq!((get_functions::<1>().five)(), 5);
assert_eq!((get_functions::<3>().five)(), 5);
assert_eq!((get_functions::<1>().increment)(4), 5);
assert_eq!((get_functions::<3>().increment)(4), 7);
```
Try solving it in the playground:
@ -30,15 +32,17 @@ struct Functions {
increment: fn(i32) -> i32,
}
fn get_functions() -> &'static Functions {
fn get_functions<const STEP: i32>() -> &'static Functions {
let five = || 5;
let increment = |n| n + 1;
let increment = |n| n + STEP;
let functions = Functions { five, increment };
&functions
}
fn main() {
assert_eq!((get_functions().five)(), 5);
assert_eq!((get_functions().increment)(4), 5);
assert_eq!((get_functions::<1>().five)(), 5);
assert_eq!((get_functions::<3>().five)(), 5);
assert_eq!((get_functions::<1>().increment)(4), 5);
assert_eq!((get_functions::<3>().increment)(4), 7);
}
```