stringbuilder.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QString>
 
//! [0]
// Required for using the '_L1' string literal.
using namespace Qt::StringLiterals;
// ...
 
    QString foo;
    QString type = "long";
 
    foo = "vector<"_L1 + type + ">::iterator"_L1;
 
    if (foo.startsWith("(" + type + ") 0x"))
        ...
//! [0]
 
//! [5]
    #include <QStringBuilder>
 
    QString hello("hello");
    QStringView el = QStringView{ hello }.mid(2, 3);
    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]