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by jnordwick 1105 days ago
arthur whitney's famous first J interpreter.

https://www.jsoftware.com/ioj/iojATW.htm

The first version of KDB the timeseries database was written by arthur in C to bootstrap the K interpreter that was used to write KDB. It was 26 files, named a.c to z.c, none larger than a single page of C written with notepad.exe.