From 27da02c7cc0c7b424ebae913f5c59c58ba7245dd Mon Sep 17 00:00:00 2001
From: Jeff Bezanson <jeff.bezanson@gmail.com>
Date: Sat, 7 Feb 2015 19:08:01 -0500
Subject: [PATCH] take advantage of ordered Dict/Set in `unique`

---
 base/set.jl | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/base/set.jl b/base/set.jl
index 9d91e864f6de4..034372164a33e 100644
--- a/base/set.jl
+++ b/base/set.jl
@@ -101,17 +101,7 @@ const ⊆ = issubset
 ⊊(l::Set, r::Set) = <(l, r)
 ⊈(l::Set, r::Set) = !⊆(l, r)
 
-function unique(C)
-    out = Array(eltype(C),0)
-    seen = Set{eltype(C)}()
-    for x in C
-        if !in(x, seen)
-            push!(seen, x)
-            push!(out, x)
-        end
-    end
-    out
-end
+unique(C) = collect(Set(C))
 
 function filter(f::Function, s::Set)
     u = similar(s)