From a30498ba42a3b265e31889d80f0fbd22ee2eff3b Mon Sep 17 00:00:00 2001
From: Parker Moore <parkrmoore@gmail.com>
Date: Wed, 22 Oct 2014 01:27:45 -0700
Subject: [PATCH] Add benchmark for #flat_map
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Calculating -------------------------------------
.map.flatten with nested arrays
                          4718 i/100ms
.flat_map with nested arrays
                          6048 i/100ms
.map.flatten with no nested arrays
                          9804 i/100ms
.flat_map with no nested arrays
                          9302 i/100ms
-------------------------------------------------
.map.flatten with nested arrays
                        48118.3 (±4.8%) i/s -     240618 in   5.011942s
.flat_map with nested arrays
                        63838.6 (±5.1%) i/s -     320544 in   5.034864s
.map.flatten with no nested arrays
                       104879.3 (±4.4%) i/s -     529416 in   5.057802s
.flat_map with no nested arrays
                        99935.3 (±6.6%) i/s -     502308 in   5.049506s
---
 benchmark/flat-map | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 benchmark/flat-map

diff --git a/benchmark/flat-map b/benchmark/flat-map
new file mode 100644
index 00000000..b10c5c9a
--- /dev/null
+++ b/benchmark/flat-map
@@ -0,0 +1,17 @@
+require 'benchmark/ips'
+
+enum = (0..50).to_a
+nested = enum.map { |i| [i] }
+
+def do_thing(blah)
+  blah * 1
+end
+
+Benchmark.ips do |x|
+  x.report('.map.flatten with nested arrays') { nested.map { |i| do_thing(i) }.flatten(1) }
+  x.report('.flat_map with nested arrays')    { nested.flat_map { |i| do_thing(i) } }
+
+  x.report('.map.flatten with no nested arrays') { enum.map { |i| do_thing(i) }.flatten(1) }
+  x.report('.flat_map with no nested arrays')    { enum.flat_map { |i| do_thing(i) } }
+end
+