The Lone C++ Coder's Blog

The Lone C++ Coder's Blog

The continued diary of an experienced C++ programmer. Thoughts on C++ and other languages I play with, Emacs, functional, non functional and sometimes non-functioning programming.

Timo Geusch

1-Minute Read

I was profiling some code a while ago that makes extensive use of boost::variant and one of the lessons from the profiler run was that boost variants appear to be fairly expensive to construct and copy.

As of 1.53, variants support rvalue constructors and rvalue assignment operators. My initial measurements suggest that when used with types that are “move enabled”, there is a benefit in upgrading to this version of boost variant, both in performance and memory consumption.

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A developer's journey. Still trying to figure out this software thing after several decades.