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Diffstat (limited to 'lib/la-arena/src/lib.rs')
| -rw-r--r-- | lib/la-arena/src/lib.rs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/lib/la-arena/src/lib.rs b/lib/la-arena/src/lib.rs index c793fff848..bb7f21788c 100644 --- a/lib/la-arena/src/lib.rs +++ b/lib/la-arena/src/lib.rs @@ -312,6 +312,21 @@ impl<T> Arena<T> { idx } + /// Densely allocates multiple values, returning the values’ index range. + /// + /// ``` + /// let mut arena = la_arena::Arena::new(); + /// let range = arena.alloc_many(0..4); + /// + /// assert_eq!(arena[range], [0, 1, 2, 3]); + /// ``` + pub fn alloc_many<II: IntoIterator<Item = T>>(&mut self, iter: II) -> IdxRange<T> { + let start = self.next_idx(); + self.extend(iter); + let end = self.next_idx(); + IdxRange::new(start..end) + } + /// Returns an iterator over the arena’s elements. /// /// ``` |