From a59396bca7427d1485ba983475d75ca6286483d5 Mon Sep 17 00:00:00 2001
From: Ritchie Vink <ritchie46@gmail.com>
Date: Fri, 8 Jul 2022 18:49:47 +0200
Subject: [PATCH] Update src/compute/cast/dictionary_to.rs

Co-authored-by: Jorge Leitao <jorgecarleitao@gmail.com>
---
 src/compute/cast/dictionary_to.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/compute/cast/dictionary_to.rs b/src/compute/cast/dictionary_to.rs
index acd22b9a90a..101669f6442 100644
--- a/src/compute/cast/dictionary_to.rs
+++ b/src/compute/cast/dictionary_to.rs
@@ -92,8 +92,7 @@ where
             Box::new(values.data_type().clone()),
             is_ordered,
         );
-        // Safety
-        // we errored if any cast overflowed
+        // Safety: this is safe because given a type `T` that fits in a `usize`, casting it to type `P` either overflows or also fits in a `usize`
         unsafe { DictionaryArray::try_new_unchecked(data_type, casted_keys, values.clone()) }
     }
 }