I'm using AEXML and I have some return XML from a WebSocket. I want to
check if the return XML contains a node or not. In this way, I know what
kind of data I'm receiving.
<updates>
<volumeUpdated />
</updates>
What's the best way to check if that volumeUpdated node exists? It has no
attributes or value.
I tried this (AEXMLElement is non-optional):
let theVolume = xmlDoc.root["volumeUpdated"]
if theVolume != nil {
print(">> We have a volume update. \(theVolume)")
}
But I get a "comparing non-optional value of type 'AEXMLElement' to nil
always returns true.
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