Performance improvements

janos · Jan 7, 2024 · 02bde0f · 02bde0f
1 parent d71ce36
commit 02bde0f
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Showing 2 changed files with 34 additions and 20 deletions.
diff --git a/README.md b/README.md
@@ -35,26 +35,26 @@ goos: darwin
 goarch: arm64
 pkg: resenje.org/casbab
 BenchmarkCamel
-BenchmarkCamel-10               1826664        642.2 ns/op      640 B/op        9 allocs/op
+BenchmarkCamel-10               2062256        567.3 ns/op      640 B/op        9 allocs/op
 BenchmarkPascal
-BenchmarkPascal-10              1830391        638.6 ns/op      640 B/op        9 allocs/op
+BenchmarkPascal-10              2110584        569.3 ns/op      640 B/op        9 allocs/op
 BenchmarkSnake
-BenchmarkSnake-10               1868508        653.8 ns/op      640 B/op        9 allocs/op
+BenchmarkSnake-10               2087415        569.7 ns/op      640 B/op        9 allocs/op
 BenchmarkCamelSnake
-BenchmarkCamelSnake-10          1782997        685.2 ns/op      640 B/op        9 allocs/op
+BenchmarkCamelSnake-10          2055385        586.4 ns/op      640 B/op        9 allocs/op
 BenchmarkScreamingSnake
-BenchmarkScreamingSnake-10      1583528        740.1 ns/op      640 B/op        9 allocs/op
+BenchmarkScreamingSnake-10      1880961        636.2 ns/op      640 B/op        9 allocs/op
 BenchmarkKebab
-BenchmarkKebab-10               1859630        640.6 ns/op      640 B/op        9 allocs/op
+BenchmarkKebab-10               2104927        572.2 ns/op      640 B/op        9 allocs/op
 BenchmarkCamelKebab
-BenchmarkCamelKebab-10          1825042        658.5 ns/op      640 B/op        9 allocs/op
+BenchmarkCamelKebab-10          2051250        583.5 ns/op      640 B/op        9 allocs/op
 BenchmarkScreamingKebab
-BenchmarkScreamingKebab-10      1685986        713.3 ns/op      640 B/op        9 allocs/op
+BenchmarkScreamingKebab-10      1887795        639.3 ns/op      640 B/op        9 allocs/op
 BenchmarkLower
-BenchmarkLower-10               1862577        640.1 ns/op      640 B/op        9 allocs/op
+BenchmarkLower-10               2118400        567.7 ns/op      640 B/op        9 allocs/op
 BenchmarkTitle
-BenchmarkTitle-10               1818093        657.6 ns/op      640 B/op        9 allocs/op
+BenchmarkTitle-10               2053699        580.1 ns/op      640 B/op        9 allocs/op
 BenchmarkScreaming
-BenchmarkScreaming-10           1647198        725.4 ns/op      640 B/op        9 allocs/op
+BenchmarkScreaming-10           1895035        652.1 ns/op      640 B/op        9 allocs/op
 PASS
 ```
diff --git a/casbab.go b/casbab.go
@@ -260,9 +260,14 @@ func join(elems [][]rune) string {
 	}
 
 	var b strings.Builder
-	b.WriteString(string(elems[0]))
+
+	for _, e := range elems[0] {
+		b.WriteRune(e)
+	}
 	for _, s := range elems[1:] {
-		b.WriteString(string(s))
+		for _, e := range s {
+			b.WriteRune(e)
+		}
 	}
 	return b.String()
 }
@@ -276,15 +281,20 @@ func joinSep(elems [][]rune, sep rune) string {
 	}
 
 	var b strings.Builder
-	b.WriteString(string(elems[0]))
+
+	for _, e := range elems[0] {
+		b.WriteRune(e)
+	}
 	for _, s := range elems[1:] {
 		b.WriteRune(sep)
-		b.WriteString(string(s))
+		for _, e := range s {
+			b.WriteRune(e)
+		}
 	}
 	return b.String()
 }
 
-func joinWrap(elems [][]rune, sep rune, prefixSize, suffixSize int) string {
+func joinWrap(elems [][]rune, sep rune, head, tail int) string {
 	switch len(elems) {
 	case 0:
 		return ""
@@ -294,17 +304,21 @@ func joinWrap(elems [][]rune, sep rune, prefixSize, suffixSize int) string {
 
 	var b strings.Builder
 
-	for i := 0; i < prefixSize; i++ {
+	for i := 0; i < head; i++ {
 		b.WriteRune(sep)
 	}
 
-	b.WriteString(string(elems[0]))
+	for _, e := range elems[0] {
+		b.WriteRune(e)
+	}
 	for _, s := range elems[1:] {
 		b.WriteRune(sep)
-		b.WriteString(string(s))
+		for _, e := range s {
+			b.WriteRune(e)
+		}
 	}
 
-	for i := 0; i < suffixSize; i++ {
+	for i := 0; i < tail; i++ {
 		b.WriteRune(sep)
 	}
 	return b.String()