Splitting a range into a range of tuples

[Dennis Ritchie via Digitalmars-d-learn]

On Monday, 1 June 2015 at 22:31:38 UTC, Adam wrote:
> Hi,
>
> I have a string of pairs of integers, where pairs are delimited 
> from each other by commas, and members of the pair are 
> delimited by a space. I'd like to end up with something like a 
> range of 2-tuples

I can offer this option:

import std.stdio, std.algorithm, std.array, std.range, 
std.format, std.typecons;

void main() {

	string s = "192 14, 301 3, 578 0, 0 17";

	int[] arr; int tmp;
	foreach (el; s.split) {
		formattedRead(el, "%s", &tmp);
		arr ~= tmp;
	}

	Tuple!(int, int)[] tup;
	foreach (el; zip(arr.stride(2), arr.dropOne.stride(2))) {
		tup ~= tuple(el[0], el[1]);
	}

	tup.sort!"a[0] > b[0]";

	writeln(tup);
}

/*[Tuple!(int, int)(578, 0), Tuple!(int, int)(301, 3), 
Tuple!(int, int)(192, 14), Tuple!(int, int)(0, 17)]*/