Claude Code uses Bun written in Rust now

Re:Claude Code uses Bun written in Rust now by mixmastamyk on Sunday July 19, 2026 @08:07PM (#48972916)

My Turbo Pascal programs could calculate and print to the screen faster than could be read, on a 486. With DOS however.

I picked the P90 because I remember running Linux ~1.0 and/or NT on it, with multitasking etc. Those soaked up many of the cycles.

Another story, around Y2k/Win2k was asked to write a C program to record all the files/sizes on the C: in to file. Then something would be installed, my program run again, and the results diffed. Despite thousands of files the program was done before the enter key came back up. Boss told me that he thought the program was cheating.

That’s just how fast modern computers are these days, I said. When running C code anyway. That perf is still available today, compare astral’s uv to slow competitors.

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Re:Claude Code uses Bun written in Rust now by wild_egg on Sunday July 19, 2026 @08:45PM (#48973156)

"The most amazing achievement of the computer software industry is its continuing cancellation of the steady and staggering gains made by the computer hardware industry."

— Henry Petroski

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Re:Claude Code uses Bun written in Rust now by mixmastamyk on Monday July 20, 2026 @12:54PM (#48981454)

Yup, Andy giveth what Bill taketh away.

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