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Sorting and Removing Elements from the Structure of Arrays (SOA) in C++

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2 Apr 2024CPOL5 min read 3.8K   1  
C++ iterators and algorithms work well for containers, but can we sort the Structure of Arrays?
C++ comes with a collection of highly optimized algorithms for sorting, partitioning, and filtering arrays of objects. Typically, the data for each object is stored in a contiguous span of memory and can be treated as a single chunk - read, replaced, or moved. In some cases, however, the data is stored in an interleaved manner, i.e., a list of x-coordinates, then y-coordinates, then z-coordinates. The out-of-the-box iterators won't work in such a case. The article shows how to write a custom iterator alongside a memory-efficient wrapper class.

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


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Engineer
Canada Canada
I am a researcher working on numerical models for deformation, crushing and flow of ice. The models are based on continuum mechanics, where numerical approaches include particle-based methods and finite elements.

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