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ndarray/tests/variance.rs at master · rust-ndarray/ndarray · GitHub

14 lines (12 loc) · 284 Bytes

use ndarray::{Array1, ArrayView1};
fn arrayview_covariant<'a: 'b, 'b>(x: ArrayView1<'a, f64>) -> ArrayView1<'b, f64>
fn test_covariance()
    let x = Array1::zeros(2);
    let shorter_view = arrayview_covariant(x.view());
    assert_eq!(shorter_view[0], 0.0);

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