Subject: Re: [boost] [flat_map] Any interest in a flat_map variant that is much faster on insertion/erase at the price of a slower lookup?
From: Phil Endecott (spam_from_boost_dev_at_[hidden])
Date: 2015-03-14 09:10:14
Peter Dimov wrote:
> Phil Endecott wrote:
>> I think we discussed this before. My preferred approach is
>> flat_set S;
>> flat_set::batch b(S);
>> } // b's dtor does the merge
> What do you do when b.insert(yyy) throws?
You have at least a couple of choices, e.g. the dtor merges
the successfully-inserted values or it discards everything.
Of course the next question is whether either merging or
discarding can also throw. I would hope that discarding
(i.e. truncating the vector back to its original size)
could reasonably be expected never to throw, right?
Merging would require that the comparisons cannot throw.
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