diff options
Diffstat (limited to 'src/test/ui/issues/issue-15734.rs')
-rw-r--r-- | src/test/ui/issues/issue-15734.rs | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/src/test/ui/issues/issue-15734.rs b/src/test/ui/issues/issue-15734.rs deleted file mode 100644 index be5820606..000000000 --- a/src/test/ui/issues/issue-15734.rs +++ /dev/null @@ -1,58 +0,0 @@ -// run-pass -// If `Index` used an associated type for its output, this test would -// work more smoothly. - -use std::ops::Index; - -struct Mat<T> { data: Vec<T>, cols: usize, } - -impl<T> Mat<T> { - fn new(data: Vec<T>, cols: usize) -> Mat<T> { - Mat { data: data, cols: cols } - } - fn row<'a>(&'a self, row: usize) -> Row<&'a Mat<T>> { - Row { mat: self, row: row, } - } -} - -impl<T> Index<(usize, usize)> for Mat<T> { - type Output = T; - - fn index<'a>(&'a self, (row, col): (usize, usize)) -> &'a T { - &self.data[row * self.cols + col] - } -} - -impl<'a, T> Index<(usize, usize)> for &'a Mat<T> { - type Output = T; - - fn index<'b>(&'b self, index: (usize, usize)) -> &'b T { - (*self).index(index) - } -} - -struct Row<M> { mat: M, row: usize, } - -impl<T, M: Index<(usize, usize), Output=T>> Index<usize> for Row<M> { - type Output = T; - - fn index<'a>(&'a self, col: usize) -> &'a T { - &self.mat[(self.row, col)] - } -} - -fn main() { - let m = Mat::new(vec![1, 2, 3, 4, 5, 6], 3); - let r = m.row(1); - - assert_eq!(r.index(2), &6); - assert_eq!(r[2], 6); - assert_eq!(r[2], 6); - assert_eq!(6, r[2]); - - let e = r[2]; - assert_eq!(e, 6); - - let e: usize = r[2]; - assert_eq!(e, 6); -} |