interesting feature to add to clang

Reed Kotler rkotler at
Thu Apr 11 15:52:56 PDT 2013

I wish I had the spare cycles right now to add this feature.

This form of iterators really simplifies many complex algorithms in 
compilers; especially many graph algorithms.

In general it works much better than STL form iterators in terms of 
algorithm clarity and simplification, IMHO.

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