Splitting a range into a range of tuples

[Adam via Digitalmars-d-learn]

> Everything is fine until I try to instantiate Tuples with my 
> arrays. Then I get an error that says none of the overloads of 
> the constructor are callable with these arguments. But I see 
> this: http://dlang.org/phobos/std_typecons.html#.Tuple.this.2 , 
> which makes me think it should work. Am I doing something wrong?

Alright! I got what I wanted. Posting here for any fellow noobs 
who may stumble across this and care what I was screwing up. It 
looks like I accidentally gave a bad example, because I needed to 
sort on the second elements ascending, not the first elements 
descending. The lambdas I was feeding to sort were not working 
because of the crazy types coming from the range methods, and it 
turns out that I did not need tuples, since I could get a proper 
sort from an array. This is what I ended up with (plus a couple 
of filters that I'm omitting for clarity):

	auto result =
		input
		.splitter(",")
		.map!(v => v.splitter(" ")
			.map!(a => a.to!(int))
			.array()
			)
		.array()
		.sort!("a[1]<b[1]");

Thanks Ali and Dennis for taking time to respond.