docs: update benchmarks

Author: cmilesdev

README.md

@@ -78,39 +78,39 @@ collection.
 
 | Op | ns/op (collection vs lo ×) | allocs/op (collection vs lo) |
 |----|------------------|--------------------|
-| All | 231ns / 230ns (1.00x) | 0 / 0 |
-| Any | 232ns / 231ns (1.00x) | 0 / 0 |
-| Chunk | 127ns / 1.0µs (**8.25x**) | 1 / 51 |
-| Contains | 234ns / 231ns (0.99x) | 0 / 0 |
-| CountBy | 8.5µs / 8.1µs (0.95x) | 5 / 11 |
-| CountByValue | 8.5µs / 8.4µs (0.98x) | 5 / 11 |
-| Difference | 19.6µs / 44.0µs (**2.24x**) | 12 / 43 |
-| Each | 230ns / 230ns (1.00x) | 0 / 0 |
-| Filter | 651ns / 1.1µs (**1.64x**) | 0 / 1 |
-| Find | 232ns / 232ns (1.00x) | 0 / 0 |
+| All | 237ns / 237ns (≈) | 0 / 0 |
+| Any | 232ns / 233ns (≈) | 0 / 0 |
+| Chunk | 127ns / 1.1µs (**8.28x**) | 1 / 51 |
+| Contains | 234ns / 234ns (≈) | 0 / 0 |
+| CountBy | 8.6µs / 8.7µs (≈) | 5 / 11 |
+| CountByValue | 8.5µs / 8.1µs (≈) | 5 / 11 |
+| Difference | 19.3µs / 43.9µs (**2.27x**) | 12 / 43 |
+| Each | 233ns / 231ns (≈) | 0 / 0 |
+| Filter | 652ns / 1.1µs (**1.67x**) | 0 / 1 |
+| Find | 238ns / 233ns (≈) | 0 / 0 |
 | First | 0ns / 0ns (∞) | 0 / 0 |
-| GroupBySlice | 8.1µs / 8.3µs (**1.03x**) | 83 / 83 |
-| IndexWhere | 243ns / 233ns (0.96x) | 0 / 0 |
-| Intersect | 17.3µs / 10.8µs (0.62x) | 12 / 19 |
+| GroupBySlice | 8.2µs / 8.3µs (≈) | 83 / 83 |
+| IndexWhere | 236ns / 233ns (≈) | 0 / 0 |
+| Intersect | 17.1µs / 10.9µs (0.64x) | 12 / 19 |
 | Last | 0ns / 0ns (∞) | 0 / 0 |
-| Map | 349ns / 811ns (**2.32x**) | 0 / 1 |
-| Max | 230ns / 229ns (1.00x) | 0 / 0 |
-| Min | 230ns / 231ns (**1.00x**) | 0 / 0 |
-| None | 231ns / 231ns (1.00x) | 0 / 0 |
-| Pipeline F→M→T→R | 491ns / 1.3µs (**2.63x**) | 0 / 2 |
-| Reduce (sum) | 231ns / 230ns (1.00x) | 0 / 0 |
-| Reverse | 212ns / 230ns (**1.08x**) | 0 / 0 |
-| Shuffle | 3.5µs / 5.3µs (**1.51x**) | 0 / 0 |
-| Skip | 0ns / 712ns (∞) | 0 / 1 |
-| SkipLast | 0ns / 712ns (∞) | 0 / 1 |
-| Sum | 234ns / 230ns (0.98x) | 0 / 0 |
+| Map | 349ns / 821ns (**2.35x**) | 0 / 1 |
+| Max | 231ns / 231ns (≈) | 0 / 0 |
+| Min | 234ns / 232ns (≈) | 0 / 0 |
+| None | 232ns / 237ns (≈) | 0 / 0 |
+| Pipeline F→M→T→R | 480ns / 1.3µs (**2.73x**) | 0 / 2 |
+| Reduce (sum) | 231ns / 230ns (≈) | 0 / 0 |
+| Reverse | 214ns / 234ns (**1.09x**) | 0 / 0 |
+| Shuffle | 3.6µs / 5.4µs (**1.50x**) | 0 / 0 |
+| Skip | 0ns / 722ns (∞) | 0 / 1 |
+| SkipLast | 0ns / 715ns (∞) | 0 / 1 |
+| Sum | 232ns / 232ns (≈) | 0 / 0 |
 | Take | 0ns / 0ns (∞) | 0 / 0 |
-| ToMap | 7.6µs / 8.3µs (**1.08x**) | 5 / 6 |
-| Union | 17.2µs / 17.8µs (**1.04x**) | 11 / 10 |
-| Unique | 6.4µs / 6.3µs (0.99x) | 6 / 6 |
-| UniqueBy | 6.7µs / 6.4µs (0.96x) | 7 / 6 |
+| ToMap | 7.7µs / 7.9µs (≈) | 5 / 6 |
+| Union | 17.5µs / 18.0µs (≈) | 11 / 10 |
+| Unique | 6.3µs / 6.3µs (≈) | 6 / 6 |
+| UniqueBy | 6.6µs / 6.4µs (≈) | 7 / 6 |
 | Zip | 1.4µs / 3.2µs (**2.27x**) | 1 / 1 |
-| ZipWith | 985ns / 3.0µs (**3.00x**) | 1 / 1 |
+| ZipWith | 978ns / 3.3µs (**3.33x**) | 1 / 1 |
 <!-- bench:embed:end -->
 
 ## Design Principles

docs/bench/main.go

@@ -697,8 +697,8 @@ func renderTable(results []benchResult) string {
 
 	var buf bytes.Buffer
 	buf.WriteString("### Performance Benchmarks\n\n")
-	buf.WriteString("| Op | ns/op (collection vs lo ×) | allocs/op (collection vs lo) |\n")
-	buf.WriteString("|----|------------------|--------------------|\n")
+	buf.WriteString("| Op | ns/op (collection vs lo) | collection vs lo × | allocs/op (collection vs lo) |\n")
+	buf.WriteString("|----|--------------------------|-------------------|-------------------------------|\n")
 
 	names := make([]string, 0, len(byName))
 	for name := range byName {
@@ -711,18 +711,19 @@ func renderTable(results []benchResult) string {
 		loRes := byName[name]["lo"]
 
 		nsCell := fmt.Sprintf(
-			"%s / %s (%s)",
+			"%s / %s",
 			formatNs(col.nsPerOp),
 			formatNs(loRes.nsPerOp),
-			formatRatio(loRes.nsPerOp, col.nsPerOp),
 		)
+		ratioCell := formatRatio(loRes.nsPerOp, col.nsPerOp)
 
 		allocCell := fmt.Sprintf("%d / %d", col.allocsPerOp, loRes.allocsPerOp)
 
 		buf.WriteString(fmt.Sprintf(
-			"| %s | %s | %s |\n",
+			"| %s | %s | %s | %s |\n",
 			name,
 			nsCell,
+			ratioCell,
 			allocCell,
 		))
 	}
@@ -759,6 +760,9 @@ func formatRatio(lo, col float64) string {
 		return "∞"
 	}
 	ratio := lo / col
+	if ratio >= 0.95 && ratio <= 1.05 {
+		return "≈"
+	}
 	out := fmt.Sprintf("%.2fx", ratio)
 	if ratio > 1 {
 		return fmt.Sprintf("**%s**", out)