Re: [boost] [range] RFC: span(iterator, size)

Subject: Re: [boost] [range] RFC: span(iterator, size)
From: Akira Takahashi (faithandbrave_at_[hidden])
Date: 2013-10-29 12:04:55

Hi,

2013/10/30 TONGARI J <tongari95_at_[hidden]>

> Hi there,
>
> I want to query if there's any interest in such a utility:
>
>     span(iterator, size) : iterator_range
>
> which simply returns iterator_range(it, it + size) for
> RandomAccessIterator;
> for others modeling ForwardIterator, a special iterator adaptor, say,
> counted_iterator is used, so we don't have to advance it just for getting
> the end iterator.
>
>
> Thoughts?
>

I & Nail will add `taken` range adaptor.

http://dl.dropboxusercontent.com/u/1682460/git/OvenToBoost/libs/range/doc/html/range_extension/reference/range_adaptors/taken.html
https://github.com/faithandbrave/OvenToBoost/blob/master/boost/range/adaptor/taken.hpp

v = {1, 2, 3, 4, 5};
r | taken(3); // {1, 2, 3}

Also, I have iterator adaptor version (internal).

>>========================
Akira Takahashi
mailto:faithandbrave_at_[hidden]
site : https://sites.google.com/site/faithandbrave/about/en