Comments on: How to write abstract iterators in C++ http://www.ocoudert.com/blog/2010/07/07/how-to-write-abstract-iterators-in-c/ My take on tech --and other topics Sun, 25 Dec 2011 18:59:06 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Olivier Coudert http://www.ocoudert.com/blog/2010/07/07/how-to-write-abstract-iterators-in-c/comment-page-1/#comment-2886 Olivier Coudert Thu, 08 Jul 2010 10:02:42 +0000 http://www.ocoudert.com/blog/?p=859#comment-2886 Hi Srihari, First of, thanks for spotting the typos --I corrected them in the code. I also added an example to illustrate the use of virtual methods in the iterator hierarchy, as well as the essential type checking for operator== before calling the (virtual) method 'bool equal(const ItrBase<e>& o) const'. Yes, the idea here is to hide the implementation of the visitor and its gory details, so that the user only see a STL-like API (which means that any STL application using iterators can be applied). Boost's iterator_facade and iterator_adaptor are answers to similar concerns. The main differences here are that the API is exactly as an STL iterator --so you can conveniently reuse any STL algorithm that takes a range--.</e> Hi Srihari,

First of, thanks for spotting the typos –I corrected them in the code. I also added an example to illustrate the use of virtual methods in the iterator hierarchy, as well as the essential type checking for operator== before calling the (virtual) method ‘bool equal(const ItrBase& o) const’.

Yes, the idea here is to hide the implementation of the visitor and its gory details, so that the user only see a STL-like API (which means that any STL application using iterators can be applied).

Boost’s iterator_facade and iterator_adaptor are answers to similar concerns. The main differences here are that the API is exactly as an STL iterator –so you can conveniently reuse any STL algorithm that takes a range–.

]]> By: srihari http://www.ocoudert.com/blog/2010/07/07/how-to-write-abstract-iterators-in-c/comment-page-1/#comment-2879 srihari Thu, 08 Jul 2010 04:56:08 +0000 http://www.ocoudert.com/blog/?p=859#comment-2879 That's nice, Olivier! Isn't this pretty much similar to Boost's iterator_facade? That’s nice, Olivier!

Isn’t this pretty much similar to Boost’s iterator_facade?

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