On 4/15/2012 12:16 PM, Ian Kelly wrote:
On Sat, Apr 14, 2012 at 8:57 PM, Shmuel Metz
<spamt...@library.lspace.org.invalid> wrote:
In<87aa2iz3l1....@kuiper.lan.informatimago.com>, on 04/11/2012
at 05:32 PM, "Pascal J. Bourguignon"<p...@informatimago.com> said:
You're confused. C doesn't have arrays. Lisp has arrays. C only has
vectors
Neither C nor any other programming language has vectors ;-)
AFAIK, C++ nomenclature notwithstanding, a vector is just an array
with only one or indices, so all languages that have arrays have
vectors.
Vectors are magnitude with direction, often represented by 1-d array of
projections on coordinate axes. If a = 1,2,3 and b = 3,2,1 are
(mathematical) vectors, then a+b = 4,4,4; 2*a = 2,4,6; and a*b = (3+4+3)
= 10.
--
Terry Jan Reedy
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