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Delphi SetLength Custom Indexing

In Delphi, it is possible to create an array of the type var Arr: array[2..N] of MyType; which is an array of N - 1 elements indexed from 2 to N. If we instead declare a dynamic array var Arr: array of MyType and later allocate N - 1 elements by means of SetLength(Arr, N - 1) then the elements will be indexed from 0 to N - ...