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-rw-r--r--lib/arena/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/arena/src/lib.rs b/lib/arena/src/lib.rs
index bce15c867..1720537cb 100644
--- a/lib/arena/src/lib.rs
+++ b/lib/arena/src/lib.rs
@@ -90,7 +90,7 @@ impl<T> Idx<T> {
90} 90}
91 91
92/// Yet another index-based arena. 92/// Yet another index-based arena.
93#[derive(Clone, PartialEq, Eq)] 93#[derive(Clone, PartialEq, Eq, Hash)]
94pub struct Arena<T> { 94pub struct Arena<T> {
95 data: Vec<T>, 95 data: Vec<T>,
96} 96}