I have two lists of strings both of which are ~300,000 lines. List 1 has a few lines more than List 2. What I'm trying to do is find the strings that in List 1 but not in List 2.
Considering how many strings I have to compare, is Except()
good enough or is there something better (faster)?
Internally the enumerable
Except
extension method usesSet<T>
to perform the computation. It's going to be as least as fast as any other method.Go with
list1.Except(list2)
.It'll give you the best performance and the simplest code.