> This is among the earliest J phrases ever written. > See frame Gc in the Appendix of > http://www.jsoftware.com/papers/J1990.htm
And among the earliest APL phrases ever written. See Figure 1 in http://www.jsoftware.com/papers/APL360TerminalSystem.htm ----- Original Message ----- From: Roger Hui <[email protected]> Date: Sunday, February 14, 2010 16:40 Subject: Re: [Jprogramming] Constant functions To: Programming forum <[email protected]> > Your phrase brings to mind a phrase to generate > the binomial coefficients > > (0&, + ,&0)^:(i.10) 1 > 1 0 0 0 0 0 0 0 > 0 0 > 1 1 0 0 0 0 0 0 > 0 0 > 1 2 1 0 0 0 0 0 > 0 0 > 1 3 3 1 0 0 0 0 > 0 0 > 1 4 6 4 1 0 0 0 > 0 0 > 1 5 10 10 5 1 0 0 0 0 > 1 6 15 20 15 6 1 0 0 0 > 1 7 21 35 35 21 7 1 0 0 > 1 8 28 56 70 56 28 8 1 0 > 1 9 36 84 126 126 84 36 9 1 > > This is among the earliest J phrases ever written. > See frame Gc in the Appendix of > http://www.jsoftware.com/papers/J1990.htm > > > > ----- Original Message ----- > From: Zsbán Ambrus <[email protected]> > Date: Sunday, February 14, 2010 9:44 > Subject: Re: [Jprogramming] Constant functions > To: Programming forum <[email protected]> > > > On Sun, Feb 14, 2010 at 6:14 PM, Tracy Harms > > <[email protected]> wrote: > > > (0: , ] , 0:) > > > (0 , ] , 0:) > > > (0 ,~ 0 , ]) > > > (0 , 0 ,~ ]) > > > > Don't forget ([: 0&, ,&0) > > > > Ambrus ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
