Merge pull request dotnet#7 from liboz/manofstick

Seq.indexed
liboz · Oct 14, 2016 · 4e31b0b · 4e31b0b
2 parents 2dc69f0 + 2e78dbd
commit 4e31b0b
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/src/fsharp/FSharp.Core/seq.fs b/src/fsharp/FSharp.Core/seq.fs
@@ -1537,8 +1537,7 @@ namespace Microsoft.FSharp.Collections
 
         [<CompiledName("Indexed")>]
         let indexed source =
-            checkNonNull "source" source
-            mapi (fun i x -> i,x) source
+            source |> seqFactory (SeqComposer.MapiFactory (fun i x -> i,x) )
 
         [<CompiledName("Zip")>]
         let zip source1 source2  =