Futurebasic/Language/Reference/xrefat
(Redirected from Futurebasic/language/reference/xrefat)
XREF@
[edit | edit source]Syntax
[edit | edit source]XREF@ arrayName maxSub1 maxSub2 AS dataType
Description
[edit | edit source]XREF@ is identical to the XREF statement, except that the link variable is interpreted as a handle, rather than as a pointer. You should use XREF@ when you want the contents of a relocatable block to be treated as an array.
Example
[edit | edit source]The following declares an array called inclination!, allocates a new block with enough room for numElts& elements, and associates the inclination! array with the contents of the block.
XREF@ inclination!(1) inclination& = FN NEWHANDLE(numElts& * SIZEOF(SINGLE)
Notes
[edit | edit source]Note that, because the value of maxSub1 is ignored in the XREF@ statement, we can arbitrarily set it to 1. However, when we actually reference the elements of the inclination! array, we can specify any subscript value in the range 0 through numElts&-1.