From 7ad9b116f7aef7bce5f8b7abe6095aa7a71804ee Mon Sep 17 00:00:00 2001
From: Linus Groh <mail@linusgroh.de>
Date: Fri, 15 Jan 2021 20:13:14 +0100
Subject: [PATCH] AK: Add String::join() helper function

This is a simple wrapper around StringBuilder::join().
---
 AK/String.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/AK/String.h b/AK/String.h
index cb93508875..f5e0a52770 100644
--- a/AK/String.h
+++ b/AK/String.h
@@ -30,6 +30,7 @@
 #include <AK/Forward.h>
 #include <AK/RefPtr.h>
 #include <AK/Stream.h>
+#include <AK/StringBuilder.h>
 #include <AK/StringImpl.h>
 #include <AK/StringUtils.h>
 #include <AK/Traits.h>
@@ -111,6 +112,15 @@ public:
     String(const FlyString&);
 
     static String repeated(char, size_t count);
+
+    template<class SeparatorType, class CollectionType>
+    static String join(const SeparatorType& separator, const CollectionType& collection)
+    {
+        StringBuilder builder;
+        builder.join(separator, collection);
+        return builder.build();
+    }
+
     bool matches(const StringView& mask, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;
     bool matches(const StringView& mask, Vector<MaskSpan>&, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;