Given the following: List<List<Option>> optionLists
What would be a quick way to find the subset of Option objects that appear in all N lists?
Equality is determined through some string property such as option1.Value == option2.Value.
We should end up with List<Option> where each item appears only once.
Answear:
var x = from list in optionLists
from option in list
where optionLists.All(l => l.Any(o => o.Value == option.Value))
orderby option.Value
select option;
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