Henry Rich Reveals J with Threads J9.4
The Array Cast
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Amends
There's an adverb in J called amends, right? Or something like that. So that allows you to put elements into an array. But the thing about structural under that it doesn't do is structural under works in all levels and stuff. I understand it's lossy. As soon as you take the first element, you've lost information about the rest of the array. And another example would be under raise or in list or rabble or anything that destroys the structure. You'd have to make it more complicated.
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