This is documentation for Mathematica 5, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

Documentation / Mathematica / The Mathematica Book / Mathematica Reference Guide / Developer Context Objects in Mathematica 5 /

Developer`FromPackedArray

FilledSmallSquare FromPackedArray[expr] unpacks expr so that its internal representation is not a packed array.

FilledSmallSquare Using FromPackedArray will not change results generated by Mathematica, but can reduce speed of execution and increase memory usage.

FilledSmallSquare If expr is not a packed array, FromPackedArray[expr] returns expr unchanged.

FilledSmallSquare See also: ToPackedArray, PackedArrayQ, ByteCount.