CODEWITHSUNDEEP
c#listtuples
Niklas Raab
Niklas Raab

Reputation: 336

Convert List To List of Tuples C#

How can i convert a List of Items to a List of Tuples.

Example 1: Sourcelist [item1] Destinationlist [{item1, null}]

Example 2: Sourcelist [item1, item2] Destinationlist [{item1, item2}]

Example 2: Sourcelist [item1, item2, item3] Destinationlist [{item1, item2}, {item3, null]]

Upvotes: 0

Views: 2845

Answers (1)

juharr
juharr

Reputation: 32266

First use the overload of Select that includes the index. Then group on the index divided by 2. Finally put the grouping, which will have one or two items into the Tuple.

var result = source.Select((v,i) => new { Index = i, Value = v })
    .GroupBy(x => x.Index/2, x => x.Value)
    .Select(g => Tuple.Create(g.First(), g.Skip(1).FirstOrDefault()));

Upvotes: 5

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