In J, functions have a valence of 1 or 2.
On Sat, Oct 29, 2011 at 1:25 PM, Andrew Pennebaker <[email protected]> wrote: > Apologies for crossposting, I'm registering for the programming forum right > now. > > Okay, the left argument is assigned to x, the right argument is assigned to > y. > > What about functions with arity greater than 2? > > Lightbulb: Does J limit arity to 0, 1, or 2? > > Cheers, > > Andrew Pennebaker > www.yellosoft.us > > On Fri, Oct 28, 2011 at 9:37 PM, Ric Sherlock <[email protected]> wrote: > >> Explicit definitions like fizzy require you to refer to the arguments >> explicitly. The right argument is assigned to "y" locally within the >> verb (right argument is assigned to "x") >> >> fizzy =: 3 : 0 >> if. div35 y do. >> 'FizzBuzz' >> elseif. div3 y do. >> 'Fizz' >> elseif. div5 y do. >> 'Buzz' >> elseif. 1 do. >> > 'd' (8!:0) y >> end. >> ) >> >> On Sat, Oct 29, 2011 at 2:15 PM, Andrew Pennebaker >> <[email protected]> wrote: >> > To get a feel for J, I'm implementing FizzBuzz, but I keep getting a >> control >> > error. >> > >> > #!/usr/bin/env jconsole >> > >> > div3 =: 0 = 3 & | >> > >> > div5 =: 0 = 5 & | >> > >> > div35 =: div3 *. div5 >> > >> > fizzy =: 3 : 0 >> > if. div35 & do. >> > 'FizzBuzz' >> > elseif. div3 & do. >> > 'Fizz' >> > elseif. div5 & do. >> > 'Buzz' >> > elseif. 1 do. >> > > 'd' (8!:0) & >> > end. >> > ) >> > >> > fizzy 1 >> > >> > exit '' >> > >> > Cheers, >> > >> > Andrew Pennebaker >> > www.yellosoft.us >> > >> > On Fri, Oct 28, 2011 at 8:39 PM, Tom Arneson <[email protected]> wrote: >> > >> >> Try >> >> >> >> mod3=: 3&| >> >> >> >> >> >> -----Original Message----- >> >> From: [email protected] [mailto:[email protected]] On >> >> Behalf Of Andrew Pennebaker >> >> Sent: Friday, October 28, 2011 12:54 >> >> To: J >> >> Subject: [Jbeta] syntax for functions and modulo >> >> >> >> I'm trying to make a function mod3 that returns the input modulo three, >> but >> >> my syntax is wrong. I don't see why the syntax would be any different >> from >> >> the double example in the docs. >> >> >> >> $ jconsole >> >> double =: * & 2 >> >> double 1 >> >> 2 >> >> double 2 >> >> 4 >> >> double 3 >> >> 6 >> >> mod3 =: 3 | & >> >> |syntax error >> >> | mod3=: 3|& >> >> >> >> >> >> Cheers, >> >> >> >> Andrew Pennebaker >> >> www.yellosoft.us >> >> ---------------------------------------------------------------------- >> >> For information about J forums see http://www.jsoftware.com/forums.htm >> >> >> >> >> >> ---------------------------------------------------------------------- >> >> For information about J forums see http://www.jsoftware.com/forums.htm >> >> >> > ---------------------------------------------------------------------- >> > For information about J forums see http://www.jsoftware.com/forums.htm >> > >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm >> > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
