Merge pull request #86 from onevcat/perf-optimize-plaintext

onevcat · web-flow · commit 40e38c83b187 · 2025-12-19T19:56:05.000+09:00
Optimize Entry.plainText concatenation
diff --git a/Sources/Rainbow.swift b/Sources/Rainbow.swift
@@ -85,7 +85,12 @@ public enum Rainbow {
         }
 
         public var plainText: String {
-            return segments.reduce("") { $0 + $1.text }
+            var result = String()
+            result.reserveCapacity(segments.reduce(0) { $0 + $1.text.utf8.count })
+            for segment in segments {
+                result.append(segment.text)
+            }
+            return result
         }
 
         public var isPlain: Bool {

Original file line number	Diff line number	Diff line change
`@@ -85,7 +85,12 @@ public enum Rainbow {`
`85`	`85`	`}`
`86`	`86`
`87`	`87`	`public var plainText: String {`
`88`		`- return segments.reduce("") { $0 + $1.text }`
	`88`	`+ var result = String()`
	`89`	`+ result.reserveCapacity(segments.reduce(0) { $0 + $1.text.utf8.count })`
	`90`	`+ for segment in segments {`
	`91`	`+ result.append(segment.text)`
	`92`	`+ }`
	`93`	`+ return result`
`89`	`94`	`}`
`90`	`95`
`91`	`96`	`public var isPlain: Bool {`