It does a memory map (mmap). Your file is addressed in virtual memory. See https... | Hacker News

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tleb_ on May 9, 2020 | parent | context | favorite | on: Show HN: Radix sort big files in memory

It does a memory map (mmap). Your file is addressed in virtual memory. See https://en.wikipedia.org/wiki/Mmap and https://en.wikipedia.org/wiki/Memory-mapped_file

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