Deconstructing KeyValuePair

deconstruct.cs

static class KeyValuePairExtensions
{
    public static void Deconstruct<TKey, TValue>(
        this KeyValuePair<TKey, TValue> kvp,
        out TKey key,
        out TValue value)
    {
        key = kvp.Key;
        value = kvp.Value;
    }
}

var dictionary = new Dictionary<int, string> { ... };
foreach ((int key, string value) in dictionary)
{
    // do something with the key and value
}