Update types.tex

[Matt--]

Added to Tuples example,lines 306-309

Now shows a tuple being created, used as a parameter, deconstructed and returned as a new tuple. Recommend keeping the comment as the phrase does not come up anywhere in the doc. I had to google it, my google foo was good...

This editing change was pretty easy to do, I'll send more your way as I find them.
** Just spotted a change on lines 732 & 734. I have no idea how I did those two, they are not part of my suggested change...

[DavePearce]

Hey Matt,

So, whats the thinking here ... to show off more tuple syntax? The modified function is ratger ugly compared to the original...

D

[Matt--]

Hi Dave,
The original is definitely shorter.

function swap(int x, int y) => (int,int):
    return y,x

But it doesn't really demonstrate tuple use. It takes two ints and returns a tuple.

This function, I suggest better matches the context text;
"Example. The following example illustrates several uses of tuples:"

(int, int) x = (4, 5)

function swap((int,int) x) => (int,int):
    int a, int b = x      // tuple destructuring assignment
    return b, a

This code demonstrates tuple creation, tuple use and tuple destructuring, in the process swapping the values of a tuple input => tuple output.