APL 2020 ⍴ reshape operator: element-count mismatch handling across interpreters
APL 2020 extended the built-in reshape operator ⍴ with negative dimensions for inferred size and zero dimensions for empty arrays of a given rank. The unresolved decision concerns what happens when the source array's element count does not equal the product of the target shape dimensions. Version assumption: APL 2020 or later. Documentation describes the mis