Quite right, Raul. And strings containing newlines do matter to me. A lot.
I confess I only threw in bpv as a bit of a joke. It relies on 5!:5
converting boxed z to...
<;._1 ' alpha bravo charlie'
which it doesn't always. In fact, it returns your example without change ...
z123=: '1';'2';'3'
5!:5 <'z123'
'1';'2';'3'
So I fear bpv doesn't merit close attention.
(I suspect ;:inv will eventually let me down too, but I haven't fooled it yet!)
b2o and its sister b2f do matter, however, as I propose to put serious
weight on them, as g.p. utilities.
b2o=: }.@((<SP) ;@,. ])
b2f=: }.@((<LF) ;@,. ])
so I'd be grateful to be notified of anyone making them misbehave.
Possible gray areas to investigate: use of i{a. where i>127, utf-8,
boxed scalars, strings with CRLF, 0{a. and other subasciis, uses of a:
, etc, etc.
On Thu, Sep 6, 2012 at 11:43 PM, Raul Miller <[email protected]> wrote:
> Note that bpv would also have problems with boxed strings containing
> spaces, and even worse problems with boxed strings containing
> newlines. (It's not clear, though, if strings containing newlines
> matter to you.)
>
> --
> Raul
>
> On Thu, Sep 6, 2012 at 6:39 PM, Ian Clark <[email protected]> wrote:
>> Right you are.
>>
>> What I really want (but haven't said) is the fastest versions of b2o
>> (boxed-to-open-string) and b2f (boxed-to-LF-separated-string), where
>> b2f is b2o with ' ' (-:SP) replaced with LF.
>>
>> I think I've got them now, thanks to everyone.
>>
>> BTW solutions involving deb aren't general enough, esp for b2f, where
>> the boxed strings may validly contain multiple spaces.
>>
>> On Thu, Sep 6, 2012 at 11:32 PM, Raul Miller <[email protected]> wrote:
>>> I prefer
>>> ;:inv z
>>>
>>> But note that
>>>
>>> deb,' ',.>z
>>>
>>> would work. (J6 users need require'strings' before this can work.)
>>>
>>> FYI,
>>>
>>> --
>>> Raul
>>>
>>> On Thu, Sep 6, 2012 at 6:21 PM, Ian Clark <[email protected]> wrote:
>>>> Yes, but we need a string.
>>>> You can ravel the 2D array to get a string, viz:
>>>> ,> z
>>>> but it gives you a varying number (0 or more) of separating spaces.
>>>>
>>>> On Thu, Sep 6, 2012 at 10:50 PM, km <[email protected]> wrote:
>>>>> > 'alpha';'bravo';'charlie'
>>>>> alpha
>>>>> bravo
>>>>> charlie
>>>>>
>>>>> I'm resending because the echo from Jsoftware to my iPad was incorrect.
>>>>> Hope this one shows my solution was to open the list of boxes.
>>>>>
>>>>> Sent from my iPad
>>>>>
>>>>>
>>>>> On Sep 6, 2012, at 4:32 PM, km <[email protected]> wrote:
>>>>>
>>>>>>> 'alpha';'bravo';'charlie'
>>>>>> alpha
>>>>>> bravo
>>>>>> charlie
>>>>>>
>>>>>> (shape 3 7)
>>>>>>
>>>>>> Sent from my iPad
>>>>>>
>>>>>>
>>>>>> On Sep 6, 2012, at 11:38 AM, Ian Clark <[email protected]> wrote:
>>>>>>
>>>>>>> Kindergarten class...
>>>>>>>
>>>>>>> I have a list of boxed literals...
>>>>>>> z=: 'alpha' ; 'bravo' ; 'charlie'
>>>>>>>
>>>>>>> I want to flatten it to a literal, but with spaces between. (Variant:
>>>>>>> --with LF's).
>>>>>>>
>>>>>>> Raze (;) does indeed flatten the list...
>>>>>>> ;z
>>>>>>> alphabravocharlie
>>>>>>>
>>>>>>> There's got to be a really neat extended Raze which includes
>>>>>>> separators. But the fastest I've been able to come up with is:
>>>>>>>
>>>>>>> b2o=: }.@((<' ') ;@,. ])
>>>>>>> b2o z
>>>>>>> alpha bravo charlie
>>>>>>>
>>>>>>> Any advances?
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