Re: [Boost-users] Modifying all matching elements in a Boost.MultiIndex Container

Subject: Re: [Boost-users] Modifying all matching elements in a Boost.MultiIndex Container
From: Joaquin M Lopez Munoz (joaquin_at_[hidden])
Date: 2016-01-01 06:28:51

Amit Prakash Ambasta <amit.prakash.ambasta <at> gmail.com> writes:

> Hey Joaquin
> First of all, thank you so much for your repeated help.

You're welcome. Please don't top post, as suggested by Boost mailing
lists guidelines:

http://www.boost.org/community/policy.html

> In line with the example provided, I've written a generic
> find_and_modify function as:
> 
> 
> Â  Â template <typename T, typename F> Segment*
>    find_and_modify(T& iterable, F filters, State s, double a_arr=-1,
>                    Comment rmk=Comment::INFO_SEGMENT_PREDICTED) {
> Â  Â     auto iter = iterable.find(filters);
> 
> Â  Â  Â  Â if (iter == iterable.end())
> Â  Â  Â  Â     return nullptr;
> 
> Â  Â  Â  Â std::pair<typename T::iterator, typename T::iterator>
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effort (basically, by rearranging the index with rearrange()) but
you might not need to anyway if modify_unstable_range is good enough
(and there's no guarantee it's going to be faster to begin with).

Joaquín M López Muñoz
Telefónica