Thanks for the link; now quite comprehensible ... -M At 2016-07-07 12:56, you wrote:
http://www.jsoftware.com/help/release/random.htm#scode Thanks, -- Raul On Thu, Jul 7, 2016 at 8:37 AM, Martin Kreuzer <i...@airkreuzer.com> wrote: > Hi all - > Approximating Pi using the Monte Carlo method (circle enscribed in unit > square) came up with > pia=. 13 : '(4 * y %~ +/ 1 >: +/ *: <: +: ? (2,y) $ 0)'("0) > (pia 10^(4+i.3)) ,:(4+i.3) > 3.1524 3.1438 3.14106 > 4 5 6 > I then compared my version with the J verb at Rosetta Code and the only > difference I found was the use of 'Atop': > piMC=: monad define "0 > 4* y%~ +/ 1>: %: +/ *: <: +: (2,y) ?@$ 0 > ) > Q: > What is the advantage (in this particular case) of using 'Atop'..? > ? (2,y) $ 0 > vs > (2,y) ?@$ 0 > Thanks > -M > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
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