diff options
Diffstat (limited to 'src/test/ui/array-slice-vec/vec-matching-fold.rs')
-rw-r--r-- | src/test/ui/array-slice-vec/vec-matching-fold.rs | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/src/test/ui/array-slice-vec/vec-matching-fold.rs b/src/test/ui/array-slice-vec/vec-matching-fold.rs deleted file mode 100644 index 998899271..000000000 --- a/src/test/ui/array-slice-vec/vec-matching-fold.rs +++ /dev/null @@ -1,46 +0,0 @@ -// run-pass - -use std::fmt::Debug; - -fn foldl<T, U, F>(values: &[T], - initial: U, - mut function: F) - -> U where - U: Clone+Debug, T:Debug, - F: FnMut(U, &T) -> U, -{ match values { - &[ref head, ref tail @ ..] => - foldl(tail, function(initial, head), function), - &[] => { - // FIXME: call guards - let res = initial.clone(); res - } - } -} - -fn foldr<T, U, F>(values: &[T], - initial: U, - mut function: F) - -> U where - U: Clone, - F: FnMut(&T, U) -> U, -{ - match values { - &[ref head @ .., ref tail] => - foldr(head, function(tail, initial), function), - &[] => { - // FIXME: call guards - let res = initial.clone(); res - } - } -} - -pub fn main() { - let x = &[1, 2, 3, 4, 5]; - - let product = foldl(x, 1, |a, b| a * *b); - assert_eq!(product, 120); - - let sum = foldr(x, 0, |a, b| *a + b); - assert_eq!(sum, 15); -} |