Re: [boost] [iterator] why isn't there a mapped_type iterator adaptor in boost?

Subject: Re: [boost] [iterator] why isn't there a mapped_type iterator adaptor in boost?
From: Thorsten Ottosen (nesotto_at_[hidden])
Date: 2010-05-18 04:50:49

Mostafa skrev:
> On Sun, 16 May 2010 03:06:07 -0700, Neil Groves 
> <neil_at_[hidden]> wrote:
> 
>>>  Of course if you wish to contribute to the tutorial that would be 
>>> very welcome.
>>
>> Let me see what I can come up with.
> 
> Attached is a sketch of my proposed tutorial.  Please comment/amend as 
> appropriate.

"Informally, a Range is any type that can be associated with a 
collection of objects of some arbitrary type or types.  Hence, a Range 
is a concept, like that of an STL Container.  The motivation for the 
Range concept is that there are many useful Container-like types that do 
not meet the full requirements of Container, and many algorithms that 
can be written with this reduced set of requirements"

- I would refrase the first sentence to

"Informally, a Range is any type that can be associated with a 
collection of objects and which allows one to iterate over all the
elements of the collection."

- I would refrase the third sentence as

"The motivation for the Range concept is that is provides
a simpler and more expressive encapsulation of a half-open
iterator range [begin,end) that is normally used in interfaces of
containers and in specification of generic algorithms."

-Thorsten