Experiment F144BD6: Reduce duration

rad-experiment show f144bd66f0967b6cace5c1074c00e1d58f519ba2

by vagrant · Mar 31 14:00 2026

Remove parseInt/toString from reduce accumulation

Delta-0.69%

Metricduration (ms)

Criterialower_is_better

LOC+1 -4

 Kept Discarded Running best

Measurements

Metric	Baseline	Candidate	Delta
duration (ms)How long the code takes to run. Less is better.	10.040 ms (n=5)	10.110 ms (n=5)	-0.69% REGRESSED
ops_per_sec (ops/sec)Operations completed per second. More is better.	99.600 ops/sec	98.960 ops/sec	-0.64% REGRESSED
p95 (ms)Measures p95 in ms. Less is better.	95.000 ms	95.000 ms	-0.00%

Diff

~ src/index.ts

@@ -11,10 +11,7 @@ export function sumFibonacci(n: number): number {
11     fibs.push(value);
12   }
13 
14-  // Reduce with unnecessary string conversions
15-  const total = fibs.reduce((acc, cur) => {
16-    return parseInt(acc.toString(), 10) + parseInt(cur.toString(), 10);
17-  }, 0);
14+  const total = fibs.reduce((acc, cur) => acc + cur, 0);
15 
16   return total;
17 }

Environment

Base commit	b327e2e8c0cb3dc29a75ec4f074f069663e3cc53
Candidate commit	de86f1f2607db914f149e40800953f4dec837508
Build	true
Tests	true
Metric ID	bbf2b1a
Arch	aarch64
OS	Linux 6.8.0-86-generic
CPU	-
Agent	claude-code / claude-opus-4-6
Files	src/index.ts