From 2bdd2fab6e9bdcdcb51ea7e09d077f36a29faf4c Mon Sep 17 00:00:00 2001
From: Zahary Karadjov <zahary@gmail.com>
Date: Wed, 2 Oct 2019 16:24:59 +0300
Subject: [PATCH] Add `len` for tuples

---
 stew/objects.nim | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/stew/objects.nim b/stew/objects.nim
index 3307f6d..01b0f6a 100644
--- a/stew/objects.nim
+++ b/stew/objects.nim
@@ -24,3 +24,10 @@ proc toArray*[T](N: static int, data: openarray[T]): array[N, T] =
 template anonConst*(val: untyped): untyped =
   const c = val
   c
+
+when not compiles(len((1, 2))):
+  import typetraits
+
+  func len*(x: tuple): int =
+    arity(type(x))
+