C
C#•6d ago
Bored Student

✅ Early return with yield

How to i early return despite using yield The method goes like 
IEnumerable<int> ProcessXml(string path)
{
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load(path);
    var nodes = xmlDoc.SelectNodes("//DataBlob");

   if(nodes == null){
        return [];
   }

   foreach(var dataBlob in nodes.Cast<XmlNode>()) 
    {
         var data = DataProcessor.Parse(dataBlob InnerText;
         yield return DataProcessor.Process(data);
    }
}
IEnumerable<int> ProcessXml(string path)
{
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.Load(path);
    var nodes = xmlDoc.SelectNodes("//DataBlob");

   if(nodes == null){
        return [];
   }

   foreach(var dataBlob in nodes.Cast<XmlNode>()) 
    {
         var data = DataProcessor.Parse(dataBlob InnerText;
         yield return DataProcessor.Process(data);
    }
}
Mixed returns aren't allowed, how would you style this? Wrap the foreach in an ≠null if ? Or eagerly evaluate rather slow data pro cessing? Is there another XML query method that returns a non-nullable collection?
4 Replies
ero
ero•6d ago
yield break;
Bored Student
Bored StudentOP•6d ago
Oh, I forgot 🤦 Thx
Denis
Denis•6d ago
$close
MODiX
MODiX•6d ago
If you have no further questions, please use /close to mark the forum thread as answered

Did you find this page helpful?