cpp / expert
Snippet
Strided Array Access for Buffer Navigation
A manual implementation of strided access over a flat array. This is essential for processing multi-dimensional data (like image channels or matrix columns) stored in a contiguous memory block.
snippet.cpp
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#include <cstddef>#include <vector>class StridedView {int* data;std::size_t stride;public:StridedView(int* ptr, std::size_t s) : data(ptr), stride(s) {}int& operator[](std::size_t index) {return data[index * stride];}};int main() {int raw_data[] = {1, 0, 0, 2, 0, 0, 3, 0, 0};StridedView view(raw_data, 3);// view[0] is 1, view[1] is 2, view[2] is 3}
Breakdown
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data[index * stride]
Calculates the effective memory address by skipping a fixed number of elements per logical step.
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int* data;
Stores a pointer to the beginning of the buffer for flexible manual memory mapping.