[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Bug-apl] quote-quote should display a blank line
From: |
David B. Lamkins |
Subject: |
Re: [Bug-apl] quote-quote should display a blank line |
Date: |
Tue, 27 May 2014 12:32:31 -0700 |
I find this confusing and counterintuitive.
If displaying an empty vector causes the interpreter to emit a CR, what
then becomes of the 0⍴<value> idiom commonly used to suppress display of
<value>? Wouldn't your output be littered with spurious CRs every time
your program executed such a line?
I spent a half-hour digging through the IBM and ISO references, finding
nothing on the subject of display of empty vectors.
On Tue, 2014-05-27 at 13:04 -0500, Blake McBride wrote:
> a. Neither an empty vector nor a vector of multiple elements has a CR
> in it. The system prints the vector, and then prints a CR. CR gets
> printed either way.
>
>
> b. I found all these errors while porting my production code which
> ran consistently over IBM APL and several other APL's. They all print
> a blank line.
>
>
> On Tue, May 27, 2014 at 12:57 PM, David B. Lamkins <address@hidden>
> wrote:
> How is that so? '' is an empty vector.
>
> On Mon, 2014-05-26 at 20:30 -0500, Blake McBride wrote:
> > ∇test
> > [1] '1'
> > [2] ' '
> > [3] '2'
> > [4] ''
> > [5] '3'
> > [6] ∇
> > test
> > 1
> >
> > 2
> > 3
> >
> >
> >
> >
> > There should be a blank line between 2 and 3.
> >
> >
> > Thanks.
> >
> >
> > Blake
> >
> >
>
>
>
>
- [Bug-apl] quote-quote should display a blank line, Blake McBride, 2014/05/26
- Re: [Bug-apl] quote-quote should display a blank line, David B. Lamkins, 2014/05/27
- Re: [Bug-apl] quote-quote should display a blank line, Blake McBride, 2014/05/27
- Re: [Bug-apl] quote-quote should display a blank line, David B. Lamkins, 2014/05/27
- Re: [Bug-apl] quote-quote should display a blank line, David B. Lamkins, 2014/05/27
- Re: [Bug-apl] quote-quote should display a blank line, Elias Mårtenson, 2014/05/27
- Re: [Bug-apl] quote-quote should display a blank line, David Lamkins, 2014/05/27
- Re: [Bug-apl] quote-quote should display a blank line, David B. Lamkins, 2014/05/28
- Re: [Bug-apl] quote-quote should display a blank line, Juergen Sauermann, 2014/05/28
- Re: [Bug-apl] quote-quote should display a blank line, Blake McBride, 2014/05/28