using DestructureExtensions;

/*...*/
var stringToSplit = "foo,bar,bam,baz";
var (first, _, third, rest) = stringToSplit.Split(',');

// first == "foo"
// third == "bam"
// rest == IEnumerable<string> containing "baz"

var one = Task.FromResult(1);
var two = Task.FromResult("foo");
var three = Task.FromResult(DateTimeOffset.Now);

var (first, second, third) = await (one, two, three).WhenAll();

var tasks = Enumerable.Range(1, 10).Select(Task.FromResult);
var results = await tasks.WhenAll();

var dictionary = new Dictionary<string, int>()
{
    { "one", 1 },
    { "two", 2 },
    { "three", 3 },
}
foreach (var (key, value) in dictionary)
{
    // ...
}