Re: [boost] std::map::find() wrapper

Subject: Re: [boost] std::map::find() wrapper
From: Olaf van der Spek (ml_at_[hidden])
Date: 2011-05-03 15:52:55

On Tue, May 3, 2011 at 6:57 PM, Robert Jones <robertgbjones_at_[hidden]> wrote:
>  I'd prefer to see it return a boost::optional<T&>

What's the benefit?

> For containers of pointers to objects, the wrapper could do an
>> additional dereference.
>>
>>
> Not a good idea, it's easier to compose than decompose so return a
> boost::optional<T*&> and the user deref if they want to.

What problem would that avoid?
It'd require the user to do an additional check.

Olaf