Add lent annotation to avoid extra copies in sample (#18404)

* Add lent annotation to avoid extra copies in sample * Remove lent * Update random.nim
nim-lang · Jul 2, 2021 · d1d2498 · d1d2498
1 parent 60eac79
commit d1d2498
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/pure/random.nim b/lib/pure/random.nim
@@ -410,7 +410,7 @@ proc sample*[T](r: var Rand; a: openArray[T]): T =
 
   result = a[r.rand(a.low..a.high)]
 
-proc sample*[T](a: openArray[T]): T =
+proc sample*[T](a: openArray[T]): lent T =
   ## Returns a random element from `a`.
   ##
   ## If `randomize <#randomize>`_ has not been called, the order of outcomes