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array::try_map #79713

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array::try_map #79713

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933b92e
arrray::try_map
eopb Dec 4, 2020
8631ed2
Break doc comment onto two lines
eopb Dec 4, 2020
0ff2022
Use correct link to issue
eopb Dec 4, 2020
892963e
Swap out `Try` for `Result`
eopb Dec 18, 2020
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Swap out Try for Result
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@eopb
eopb committed Dec 30, 2020
commit 892963e3bb5dd6fd8fc302c4c767e0e9d519700a
7 changes: 3 additions & 4 deletions library/core/src/array/mod.rs
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Expand Up @@ -12,7 12,7 @@ use crate::convert::{Infallible, TryFrom};
use crate::fmt;
use crate::hash::{self, Hash};
use crate::marker::Unsize;
use crate::ops::{Index, IndexMut, Try};
use crate::ops::{Index, IndexMut};
use crate::slice::{Iter, IterMut};

mod iter;
Expand Down Expand Up @@ -480,10 480,9 @@ impl<T, const N: usize> [T; N] {
/// assert!(b.is_err());
/// ```
#[unstable(feature = "array_try_map", issue = "79711")]
pub fn try_map<F, R, E, U>(self, mut f: F) -> Result<[U; N], E>
pub fn try_map<F, E, U>(self, mut f: F) -> Result<[U; N], E>
where
F: FnMut(T) -> R,
R: Try<Ok = U, Error = E>,
F: FnMut(T) -> Result<U, E>,
{
use crate::mem::MaybeUninit;
struct Guard<T, const N: usize> {
Expand Down