score:0

let's say i want to check amount as coalesce then use nullable as mention in below code sample

context.order.where(w => w.status == "paid").sum(s => (nullable<int>) s.amount ?? 0)

score:4

have a look at null-coalescing operator

e.g.

string text1 = null;
string result = text1 == null ? "default" : text1 ;

you can do

string result = text1 ?? "default";

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