Show HN: I built a CSV parser to try Go 1.26's new SIMD package https://ift.tt/WMO8BrH

Show HN: I built a CSV parser to try Go 1.26's new SIMD package Hey HN, A CSV parser using Go 1.26's experimental simd/archsimd package. I wanted to see what the new SIMD API looks like in practice. CSV parsing is mostly "find these bytes in a buffer"—load 64 bytes, compare, get a bitmask of positions. The interesting part was handling chunk boundaries correctly (quotes and line endings can split across chunks). - Drop-in replacement for encoding/csv - ~20% faster for unquoted data on AVX-512 - Quoted data is slower (still optimizing) - Scalar fallback for non-AVX-512 Requires GOEXPERIMENT=simd. https://ift.tt/paWbEte Feedback on edge cases or the SIMD implementation welcome. https://ift.tt/paWbEte January 27, 2026 at 09:28PM

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