Digging further, it's interesting to note that ISO APL defines + as conjugate, but does not have a binding for the identity function.
On Tue, Jul 1, 2014 at 9:42 AM, David Lamkins <da...@lamkins.net> wrote: > I looked this up yesterday. Dialog version 13 introduced the use of the > tack as identity and repurposed + as conjugate. (Actually, they bound both > left and right tacks identically, even though they call left tack "same" > and right tack "identity".) If the argument of conjugate is imaginary, > conjugate returns the number with the imaginary part negated. If the > argument of conjugate is real or non-numeric, conjugate returns the > argument unchanged. > > > > > From: Juergen Sauermann <juergen.sauerm...@t-online.de> > >> To: "Elias Mårtenson" <loke...@gmail.com> >> Cc: "bug-apl@gnu.org" <bug-apl@gnu.org> >> Date: Tue, 01 Jul 2014 17:04:24 +0200 >> Subject: Re: [Bug-apl] Identify function >> Hi Elias, >> >> I looked in "Mastering APL" from Dyalog and could not find it. >> They call + the identity function. >> >> And what would be the use of it? >> >> /// Jürgen >> >> > -- > "The secret to creativity is knowing how to hide your sources." > Albert Einstein > > > http://soundcloud.com/davidlamkins > http://reverbnation.com/lamkins > http://reverbnation.com/lcw > http://lamkins-guitar.com/ > http://lamkins.net/ > http://successful-lisp.com/ > -- "The secret to creativity is knowing how to hide your sources." Albert Einstein http://soundcloud.com/davidlamkins http://reverbnation.com/lamkins http://reverbnation.com/lcw http://lamkins-guitar.com/ http://lamkins.net/ http://successful-lisp.com/
