(;:'am pm') ,~&.>/ ":&.>>:i.12
┌───┬───┬───┬───┬───┬───┬───┬───┬───┬────┬────┬────┐
│1am│2am│3am│4am│5am│6am│7am│8am│9am│10am│11am│12am│
├───┼───┼───┼───┼───┼───┼───┼───┼───┼────┼────┼────┤
│1pm│2pm│3pm│4pm│5pm│6pm│7pm│8pm│9pm│10pm│11pm│12pm│
└───┴───┴───┴───┴───┴───┴───┴───┴───┴────┴────┴────┘





On Wed, Apr 2, 2014 at 4:40 PM, Linda Alvord <[email protected]>wrote:

>  Now we can both wait for a virtuoso. Here's my first try which can
> probably
> be simplified a lot.
>
>
>      <"1 (":,.(>:i.12),>:i.12),.(12 2$'am'),12 2$'pm'
>
> -----T----T----T----T----T----T----T----T----T----T----T----T----T----T----T
> ----T----T----T----T----T----T----T----T----┐
> │ 1am│ 2am│ 3am│ 4am│ 5am│ 6am│ 7am│ 8am│ 9am│10am│11am│12am│ 1pm│ 2pm│
> 3pm│
> 4pm│ 5pm│ 6pm│ 7pm│ 8pm│ 9pm│10pm│11pm│12pm│
>
> L----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
> ----+----+----+----+----+----+----+----+-----
>
> Now we can both wait for a virtuoso.
>
> Linda
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of glts
> Sent: Wednesday, April 02, 2014 8:12 AM
> To: [email protected]
> Subject: Re: [Jprogramming] Pretty print hours of the 12-hour clock
>
> On Wed, Apr 2, 2014 at 12:59 PM, chris burke <[email protected]> wrote:
> > The argument i.24 to fmthours may be unnecessary.
> >
> >
> > In any case, you can generate all hours as:
> >
> >
> > allhours=: , (;:'am pm') (,~":) each/ _1|.1+i.12
> >
> >
> > Then fmthours is:
> >
> >
> > fmthours=: {&allhours
> >
> >
> > For example;
> >
> >
> >    fmthours 4
> >
> > +---+
> >
> > |4am|
> >
> > +---+
> >
> >    fmthours i.24
> >
> > +----+---+---+---+...
> >
> > |12am|1am|2am|3am|...
> >
> > +----+---+---+---+...
>
> Very nice and very instructive. It hadn't occurred to me to use 'each'
> on an unboxed argument, this will be useful in the future.
>
> And I had used this thing to obtain the hours:
>
>    hours=: 12&(|`[@.(0=|))"0
>    hours i.24
> 12 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11
>
> Incrementing and shifting is simpler and more elegant. Thanks!
>
>
> --
> David
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