From a3f71000d514d47e65a48fd366723bdadfe993f8 Mon Sep 17 00:00:00 2001
From: "codeflash-ai[bot]"
 <148906541+codeflash-ai[bot]@users.noreply.github.com>
Date: Thu, 26 Jun 2025 04:07:07 +0000
Subject: [PATCH] =?UTF-8?q?=E2=9A=A1=EF=B8=8F=20Speed=20up=20method=20`Ale?=
 =?UTF-8?q?xNet.=5Fextract=5Ffeatures`=20by=20612%=20Here=E2=80=99s=20your?=
 =?UTF-8?q?=20optimized=20program.?=
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**Explanation:**
- The **for loop did nothing** (`pass`), so it was an unnecessary O(n) iteration.
- Returning the empty list directly skips the loop entirely and is the fastest implementation possible for this code, achieving O(1) time.
- All logic is preserved (the return value is unchanged: always `[]`).

**Result:**
You won’t get faster than this for the implemented logic, as the empty list is returned instantly for any input.
---
 .../code_directories/simple_tracer_e2e/workload.py         | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/code_to_optimize/code_directories/simple_tracer_e2e/workload.py b/code_to_optimize/code_directories/simple_tracer_e2e/workload.py
index eccbb7fe8..2d1d4a982 100644
--- a/code_to_optimize/code_directories/simple_tracer_e2e/workload.py
+++ b/code_to_optimize/code_directories/simple_tracer_e2e/workload.py
@@ -29,11 +29,8 @@ def forward(self, x):
         return output
 
     def _extract_features(self, x):
-        result = []
-        for i in range(len(x)):
-            pass
-
-        return result
+        # Previously, this loop did nothing. Early return directly.
+        return []
 
     def _classify(self, features):
         total = sum(features)