John Conways`s "Game of Life"

This function takes a boolean matrix as argument and returns a boolean matrix with the new generation.

  ∇ nextGeneration←Life currentGeneration
[1] ⍝⍝ Take a matrix of Booleans and returns one
[2]  nextGeneration←↑1 currentGeneration∨.∧3 4=+/,¯1 0 1∘.⊖¯1 0 1∘.⌽⊂currentGeneration
  ∇

Title 2

wiki:WikiPedia/Conways_Game_of_Life
[http://catpad.net/michael/apl/ Conway's Game of Life in one line of APL]
[http://www.vector.org.uk/archive/v213/cliff213.htm Time(r) for the Game of Life]

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