diff options
| -rw-r--r-- | src/stack.nim | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/stack.nim b/src/stack.nim index d6493a3..ef7edf8 100644 --- a/src/stack.nim +++ b/src/stack.nim @@ -46,8 +46,8 @@ func Clear*(s: var Stack) = s.height = 0 func Duplicate*(s: var Stack) = - if s.height > 0: - s.Push(s.data[s.height-1]) + let v = s.Pop() + s.PushVector((v, v)); func Swap*(s: var Stack) = let a = s.Pop |