On 8/20/2010 12:01 AM, Andrei Alexandrescu wrote:
On 08/19/2010 10:42 PM, David Simcha wrote:
I remember about a year and a half ago, there was talk of defining a
wrapper module around ranges to make them more usable in cases where
templates can't be used, such as virtual functions. I've revisited that
now that I'm cleaning up ranges. I've created a fairly simple attempt at
writing such a module. (http://pastebin.com/aDew6Kgg) This exercise has
reinforced my conviction that about the only thing good about nominative
typing is that it's easy to implement efficiently.
Well structural systems (which current ranges are) are also pretty
easy to implement efficiently. Anyway, signs of OO clusterfrak are
already visible in the explosion of iXxxAssignable interfaces.
Could you please add moveFront() and friends to the interfaces? Given
that you've given up on ref returns (which I believe is a sound
decision) we need some efficient means to destructively read stuff.
Added moveFront, moveBack, moveAt and capitalized things. For some
reason I thought interface names were excluded from the capitalize
typename convention if you're using the Hungarian IInterfaceName style.
It may make sense to just drop the Hungarian stuff, but I don't know if
D has a firm convention either way yet on using Hungarian for interfaces.
http://pastebin.com/sHiTNABe
Also, I found some nasty moveBack/moveAt bugs in std.range in the
process, namely no default impl. for ranges of elements w/o postblits.
I have no idea how they went this long without being found/fixed.
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