How closely can pure functional programming match C's performance?

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A post on rtfeldman.com examines how near purely functional programming can get to the speed of C. The source is a Hacker News submission that gathered 19 points and one comment at the time it was indexed. The provided material contains only the link and engagement metrics, not the article's full text, so its specific findings and benchmarks cannot be confirmed here. The discussion centers on the performance gap between functional language design and C's low-level, manually managed model. Readers interested in the actual results should consult the original article directly.

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