[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=:

Re: [Jbeta] syntax for functions and modulo

mod3=: 3 | ] mod3 11 5 3 2 2 2 0 2 2011/10/28 Andrew Pennebaker andrew.penneba...@gmail.com 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. $

Re: [Jbeta] syntax for functions and modulo

mod3=: 3| On Fri, Oct 28, 2011 at 10:54 AM, Andrew Pennebaker andrew.penneba...@gmail.com wrote: 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

Re: [Jbeta] syntax for functions and modulo

You should post this in jprogramming. In any case, it looks like you just juxtaposed a few characters. mod3=: 3| mod3 i.10 0 1 2 0 1 2 0 1 2 0 -Original Message- From: beta-boun...@jsoftware.com [mailto:beta-boun...@jsoftware.com] On Behalf Of Andrew Pennebaker Sent: Friday,

Re: [Jbeta] syntax for functions and modulo

Thanks Björn, Roger, and Lettow. The docs imply that J and its predecessor APL use prefix/right-to-left syntax. So I expected all J code to have the form: operator operands And therefore defining functions to be similar to stack languages, but in reverse order. myfunc =: operator

Re: [Jbeta] syntax for functions and modulo

Infix is good if you have dyadic functions/operators. For example: * +x y - x y (x+y)*(x-y) On Fri, Oct 28, 2011 at 12:50 PM, Andrew Pennebaker andrew.penneba...@gmail.com wrote: Thanks Björn, Roger, and Lettow. The docs imply that J and its predecessor APL use prefix/right-to-left

Re: [Jbeta] syntax for functions and modulo

On Fri, Oct 28, 2011 at 3:50 PM, Andrew Pennebaker andrew.penneba...@gmail.com wrote: Thanks Björn, Roger, and Lettow. The docs imply that J and its predecessor APL use prefix/right-to-left syntax. So I expected all J code to have the form: operator operands Which docs? Anyways, my initial

Re: [Jbeta] syntax for functions and modulo

Try mod3=: 3| -Original Message- From: beta-boun...@jsoftware.com [mailto:beta-boun...@jsoftware.com] 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

Re: [Jbeta] syntax for functions and modulo

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'

Re: [Jbeta] syntax for functions and modulo

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.

Re: [Jbeta] syntax for functions and modulo

Sorry just noticed that this is in the beta forum. Questions like this would be better asked and answered in the programming forum. On Sat, Oct 29, 2011 at 2:37 PM, Ric Sherlock tikk...@gmail.com wrote: Explicit definitions like fizzy require you to refer to the arguments explicitly. The right