Tamas K Papp <email@example.com> wrote:
| jra wrote:
| > What is the right way to create a new array (1D) from an existing array,
| > where the new array will have the specialized type of the type of the
| > existing array's elements (reguardless of the existing array's type: ie
| > could be t but all elements are double-float, or could be double-float)?
| In case all elements of an array are subtype of some particular type that
| you want to specialize to, you will have to recognize this yourself and
| create the new array with an explicit element-type.
| Think about it: what should (vector 1 2 3) specialize to? Fixnum?
| (unsigned-byte 2)? (signed-byte 17)? You get the idea.
While this is true, the OP might want to look at some of the posts
in the latter half of this thread, "Subject: copying arrays":
There are a couple of suggested implementations of a COPY-ARRAY
which preserves the original array's properties.
Also see <http://www.cliki.net/SHALLOW-COPY-ARRAY>.
Rob Warnock <firstname.lastname@example.org>
627 26th Avenue <URL:http://rpw3.org/>
San Mateo, CA 94403 (650)572-2607