1 files changed, 23 insertions, 4 deletions
diff --git a/src/corelib/doc/snippets/qstring/stringbuilder.cpp b/src/corelib/doc/snippets/qstring/stringbuilder.cpp
index 6b3175d48a..c3a709bd4c 100644
--- a/src/corelib/doc/snippets/qstring/stringbuilder.cpp
+++ b/src/corelib/doc/snippets/qstring/stringbuilder.cpp
@@ -1,6 +1,8 @@
 // Copyright (C) 2016 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
+#include <QString>
+
 using namespace Qt::StringLiterals;
 
 //! [0]
@@ -13,10 +15,6 @@ using namespace Qt::StringLiterals;
         ...
 //! [0]
 
-//! [3]
-    DEFINES *= QT_USE_QSTRINGBUILDER
-//! [3]
-
 //! [5]
     #include <QStringBuilder>
 
@@ -25,3 +23,24 @@ using namespace Qt::StringLiterals;
     QLatin1StringView world("world");
     QString message =  hello % el % world % QChar('!');
 //! [5]
+
+//! [6]
+    QString str("QStringBuilder");
+
+    // "s" type is deduced as QStringBuilder<...>
+    auto s = "Like hot glue, " % str % " concatenates strings";
+
+    // Similarly the return type of this lambda is deduced as QStringBuilder<...>
+    auto concatenateStr = []() {
+        return "Like hot glue, " % str % " concatenates strings";
+    };
+//! [6]
+
+//! [7]
+    QString s = "Like hot glue, " % str % " concatenates strings";
+
+    // With a lambda, specify a trailing return type:
+    auto concatenateStr = []() -> QString {
+        return "Like hot glue, " % str % " concatenates strings";
+    };
+//! [7]