--- a/src/maputil.rs Tue Feb 20 12:33:16 2024 -0500
+++ b/src/maputil.rs Mon Feb 03 19:22:16 2025 -0500
@@ -2,6 +2,7 @@
Utilities for mapping over various container types.
*/
+#[cfg(feature = "nightly")]
use std::mem::MaybeUninit;
use itertools::izip;
@@ -322,8 +323,13 @@
///
/// If `iter.next()` panicks, all items already yielded by the iterator are
/// dropped.
+#[cfg(feature = "nightly")]
#[inline]
-pub(crate) fn collect_into_array_unchecked<T, I : Iterator<Item=T>, const N: usize>(mut iter: I) -> [T; N]
+pub(crate) fn collect_into_array_unchecked<
+ T,
+ I : Iterator<Item=T>,
+ const N: usize
+>(mut iter: I) -> [T; N]
{
if N == 0 {
// SAFETY: An empty array is always inhabited and has no validity invariants.
@@ -375,6 +381,19 @@
unreachable!("Something went wrong with iterator length")
}
+#[cfg(not(feature = "nightly"))]
+#[inline]
+pub(crate) fn collect_into_array_unchecked<
+ T,
+ I : Iterator<Item=T>,
+ const N: usize
+>(iter: I) -> [T; N]
+{
+ match iter.collect::<Vec<T>>().try_into() {
+ Ok(a) => a,
+ Err(_) => panic!("collect_into_array failure: should not happen"),
+ }
+}
#[cfg(test)]
mod tests {