From 783eec9b4592ff3fa54ffa1a855dda2a71f2db64 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Wed, 13 Mar 2019 20:55:24 -0700
Subject: Made iteration easier to work with by using .__inext and .__next for
 custom iteration, and a custom ipairs() and pairs() to use that.

---
 builtin_metatables.moon | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'builtin_metatables.moon')

diff --git a/builtin_metatables.moon b/builtin_metatables.moon
index 7af5bf7..430a48a 100644
--- a/builtin_metatables.moon
+++ b/builtin_metatables.moon
@@ -80,8 +80,9 @@ co_mt =
     as_text: => (tostring(@)\gsub("thread", "Coroutine")).." ("..coroutine.status(@)..")"
     __len: => math.huge
     __call: coroutine.resume
-    __next: (k)=>
+    __inext: (k)=>
         ok, val = coroutine.resume(@)
+        return if coroutine.status(@) == 'dead'
         if ok then return (k or 0) + 1, val
     __index: (k)=>
         if k == (_last_co_i[@] or 0) + 1
@@ -92,6 +93,7 @@ co_mt =
             else
                 return nil
         return co_mt[k]
+co_mt.__next = co_mt.__inext
 debug.setmetatable(coroutine.create(->), co_mt)
 
 nil_mt =
-- 
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