[Issue 8075] Optional parameters should be able to refer to previous parameters

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8075


Steven Schveighoffer <schveiguy at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |schveiguy at yahoo.com


--- Comment #1 from Steven Schveighoffer <schveiguy at yahoo.com> 2012-05-10 04:58:18 PDT ---
I really like this idea.

But there must be a provision that the expression isn't substituted wholesale.

For instance, your example should not expand to:

process([1, 2, 3], [1, 2, 3].length);

which allocates *twice*, the second time just to get the length.  It should
really expand to this:

auto items = [1, 2, 3];
process(items, items.length);

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