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Start your free trialNathan Reinauer
2,097 PointsUnexpected symbol ',', expecting ')'
I'm probably missing something stupid, but I can't see it. Where do I have a comma that's supposed to be a closing parenthesis?
var myBirds = new List<Bird>
{
new Bird { Name = "Cardinal", Color = "Red", Sightings = 3 },
new Bird { Name = "Dove", Color = "White", Sightings = 2 },
new Bird { Name = "Robin", Color = "Red", Sightings = 5 }
};
var yourBirds = new List<Bird>
{
new Bird { Name = "Dove", Color = "White", Sightings = 2 },
new Bird { Name = "Robin", Color = "Red", Sightings = 5 },
new Bird { Name = "Canary", Color = "Yellow", Sightings = 0 }
};
var ourBirds = myBirds.Join(yourBirds,
mb => mb.Name,
yb => yb.Name,
(myBird, yourBird));
1 Answer
Steven Parker
231,198 PointsThe fourth argument to Join needs to be a function.
Specifically, it needs to be a function to create a result element from two matching elements
It should have this signature: Func<TOuter,βTInner,βTResult>
.
Since you're just returning the objects in common, you can write a lambda expression that takes two arguments and returns either one of them:
(myBird, yourBird) => myBird
It kind of looks like you started to do this but just didn't finish.