Re: What features of D are you using now which you thought you'd never goint to use?

[Brad Anderson]

On Sunday, 23 June 2013 at 01:34:53 UTC, Andrei Alexandrescu 
wrote:
On 6/22/13 2:58 PM, monarch_dodra wrote:
long story short: we don't have rfind. C++ does.

We do, just that it's for random-access ranges. C++ offers it 
for bidirectional ranges too. We could of course support it if 
bidirectional ranges were required to have something like 
r1.before(r2) that, assuming r2 is reachable from r1, returns 
the portion in r1 that's before r2.

Andrei

How efficiently could before() be implemented?