Nested Interactive Array Language, aka Nested Interactive Array Language, is a historical programming language created in 1981.

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Example code from Wikipedia:

quicksort is fork [ >= [1 first,tally],
   pass,
   link [
       quicksort sublist [ < [pass, first], pass ],
       sublist [ match [pass,first],pass ],
       quicksort sublist [ > [pass,first], pass ]
   ]
]
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Last updated February 11th, 2019