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-rw-r--r--lib/segmenttree.ml1
1 files changed, 0 insertions, 1 deletions
diff --git a/lib/segmenttree.ml b/lib/segmenttree.ml
index 2a7f9df0..9ce348a0 100644
--- a/lib/segmenttree.ml
+++ b/lib/segmenttree.ml
@@ -40,7 +40,6 @@ type domain =
type 'a t = (domain * 'a option) array
(** The root is the first item of the array. *)
-let is_root i = (i = 0)
(** Standard layout for left child. *)
let left_child i = 2 * i + 1