And thanks to Jose Mario Quintana for providing the link to the
Hui/Iverson/McDonnell paper.
> On Sep 11, 2018, at 10:45 PM, Linda Alvord <lindaalvor...@outlook.com> wrote:
>
> Jim,
> I just translated that old pmt into an explicit version which contains y and
> is monadic. As you learn the J vocabulary this will become readable. J is
> executed from right to left so start from 1{y.
>
> PMT=: 13 :'(2}y)*((0{y) % 1200) * ((1 + (0{y) % 1200) ^ 1{y) % ((1 + (0{y) %
> 1200) ^ 1{y) - 1'
>
> A=:5.75 240 12500
> PMT A
> 87.7604
>
> If it can, 13 : will reply in J's tacit language. PMT returns a tacit
> response.
>
>
> 2} * (1200 %~ 0 { ]) * ((1 + 1200 %~ 0 { ]) ^ 1 { ]) % 1 -~ (1 + 1200 %~ 0 {
> ]) ^ 1 { ]
>
>
> Notice %~ , it shows you that your explicit order could be improved. Now,
> chop it into words. This is "J speak"
>
> ;:'2} * (1200 %~ 0 { ]) * ((1 + 1200 %~ 0 { ]) ^ 1 { ]) % 1 -~ (1 + 1200 %~
> 0 { ]) ^ 1 { ]'
> ┌─┬─┬─┬─┬────┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬────┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┬────┬─┬─┬─┬─┬─┬─┬─┬─┬─┬─┐
> │2│}│*│(│1200│%│~│0│{│]│)│*│(│(│1│+│1200│%│~│0│{│]│)│^│1│{│]│)│%│1│-│~│(│1│+│1200│%│~│0│{│]│)│^│1│{│]│
> └─┴─┴─┴─┴────┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴────┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴────┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┘
> If you work on a laptop you could read all this much better. As you study it
> from right to left you will be able to tell where y belongs. Try this on a
> dyadic function to see some differences.
>
> Linda
>
> -----Original Message-----
> From: Programming <programming-boun...@forums.jsoftware.com> On Behalf Of
> 'Jim Russell' via Programming
> Sent: Tuesday, September 11, 2018 4:04 PM
> To: programm...@jsoftware.com
> Subject: Re: [Jprogramming] [Jpr
>
> I for one would love to see that (a clear description of how 13 : converts
> explicit expressions to tacit) but I can’t promise that I would understand
> it.
>
>> On Sep 11, 2018, at 1:05 PM, Raul Miller <rauldmil...@gmail.com> wrote:
>>
>> a clear description of how 13 : converts explicit expressions to tacit.
>
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