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Subject: Re: [boost] [iterator] could non-small predicates/functors be stored as boost::optional<T> to avoid double construction?
From: Arno Schödl (aschoedl_at_[hidden])
Date: 2008-09-04 08:09:33

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In reply to: Thorsten Ottosen: "[boost] [iterator] could non-small predicates/functors be stored as boost::optional<T> to avoid double construction?"
Next in thread: Thorsten Ottosen: "Re: [boost] [iterator] could non-small predicates/functors be stored as boost::optional<T> to avoid double construction?"
Reply: Thorsten Ottosen: "Re: [boost] [iterator] could non-small predicates/functors be stored as boost::optional<T> to avoid double construction?"

> Hi,

> The headline pretty much says it all. Take transform iterator. When the
> predicate is not trivial, we also have a redundant construction of the
> object in the end iterator. Maybe that could be removed?

> best regards

> -Thorsten

I guess that would be restricted to forward iterators.

Arno

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