> From: Raul Miller > On Fri, Aug 28, 2009 at 4:39 AM, Sherlock, wrote: > > I'm not convinced that this solution meets the spec given for the > RosettaCode problem "Basic bitmap storage" > > http://rosettacode.org/wiki/Basic_bitmap_storage > > > > allocimg=: 0 $~ 3 ,~ ] > > fillimg=: ]`(a:"_)`[} > > setpix=: (1&{::@])`([: <@;/ <:@(0&{::@]))`[} > > getpix=: <@;/@:<:@] { [ > > > > myimg=: allocimg 10 7 NB. 10 by 7 pixel image > > myimg=: myimg fillimg 0 255 0 NB. fill with green > > myimg getpix 4 5 NB. get color of pixel from 4th row > and 5th col > > 0 255 0 > > myimg=: myimg setpix 4 5; 255 0 255 NB. set pixel to magenta > > myimg getpix 4 5 NB. verify > > 255 0 255 > > > > I'm thinking that I probably need to pass the name rather than the > value of the image object? > > I see nothing in the specs even suggesting that call by value should > not be used.
Thanks I'll add it then. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
