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APL (programming language)
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=== York APL === York APL<ref name="YorkAPL">{{cite web |url=https://www.softwarepreservation.org/projects/apl/Books/YorkAPL |title=York APL}}</ref> was developed at the [[York University]], Ontario around 1968, running on IBM 360 mainframes. One notable difference between it and APL\360 was that it defined the "shape" (Ο) of a scalar as 1 whereas APL\360 defined it as the more mathematically correct 0 β this made it easier to write functions that acted the same with scalars and vectors.
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