Hi Everyone,
I'm new to Qt and I'm learning something new every day.
Currently, I'm developing a small application for my Nokia N900 in my free time.
Everything is fine, I am able to compile and run Maemo applications on the device.
I've just learned about the foreach
keyword in Qt. (I know it is not in C++, so I didn't think about it until I accidentally stumbled upon a Qt doc that mentioned it.)
So, I decided to change my quite annoying and unreadable loops to foreach, but I failed with this:
QDomNodeList list = doc.lastChild().childNodes().at(1).firstChild().childNodes();
for (int x = 0; x < list.count(); x++)
{
QDomElement node = list.at(x).toElement();
// Do something with node
}
This is how I tried:
foreach (QDomElement node, doc.lastChild().childNodes().at(1).firstChild().childNodes())
{
// Do something with node
}
For some reason the above code doesn't even compile. I get cryptic error messages from the compiler.
Could someone please explain to me how to get it right?
If the foreach
loop doesn't support QDomNodeList
, is there a way to handle XML files which supports foreach
?
EDIT:
To clarify, // Do something with node
is the following in this case:
EveCharacter chr;
chr.setName(node.attribute(EVE_NAME));
chr.setId(node.attribute(EVE_CHARACTER_ID).toInt());
acc->addCharacter(chr);
Where acc is of type EveAccount
, which stores data in a QList<EveCharacter>
.
The uppercase symbols are compile-time constant strings.
(I'm creating a client for the EVE Online API. This is from the method that receives the account characters XML and interprets it.)
This is how I create doc
:
QDomDocument doc;
doc.setContent(reply->readAll());
Note that reply
is a QNetworkReply*
which is sent back from a QNetworkAccessManager
.
However, as the EVE API works with XML, I do a lot of XML parsing very similar to this in many places in my application.
Most of the XMLs can be several hundred lines long and can contain quite non-regular data patterns, such as this one.