5min chapter

The Array Cast cover image

Henry Rich’s Deep Dive into J

The Array Cast

CHAPTER

What Is Your First Bug Fix?

The interpreter is written in C, or what I like to call sort of a macro DSL version of C. There are hundreds of combinations of primitives that have special code behind them. The huge advantage is the guy who wrote it, the art Roger, who is a master. It's done this way because this is the right way to do it.

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