Qt check whether there is a file with the given extensions

checkFile.cpp

QString checkFile(QString foldername, QStringList exts, QString filename) {
    foreach(auto ext, exts) {
        QFileInfo check(foldername+"/"+filename+"."+ext);
        if(check.exists() && check.isFile())
            return check.absoluteFilePath();
        return QString();
    }
}