On Tue, Sep 11, 2012 at 4:49 AM, Bryce
In the same vein as the "who discovered the fold operation" thread from last week, I would like to know the same answer for "map".
I tried looking it up on wikipedia, but the best line I could find from it is this: "The map function originated in functional programming languages but is today supported (or may be defined) in many procedural, object oriented, and multi-paradigm languages as well: In C++'s Standard Template Library, it is called transform, in C# (3.0)'s LINQ library, it is provided as an extension method called Select."
Does anyone have an answer or idea on where I could look?
Thanks in advance and sorry if it it's a redundant question.
Bryce
Among programming languages I think its (again) APL. In the case of map its much more pervasive and implicit than with fold. (In haskell terminology we would say both map and zipwith) http://www.jsoftware.com/papers/APL1.htm#s.5 Heres a small A+ (linux apl) session. A+ Copyright (c) 1990-2008 Morgan Stanley. All rights reserved. This version is Release 4.22
a ← 4 v ← 5 6 7 a + a 8 a + v 9 10 11 v + v 10 12 14 v × v 25 36 49 v ÷ v 1 1 1 v ÷ 2 2.5 3 3.5 v ≤ 6 1 1 0