Vi has support for showing & moving between parens.
Sent from my iPhone
On Oct 21, 2012, at 9:50 AM, Raul Miller <rauldmil...@gmail.com> wrote:
> That said, when I read your code, I'm noticing that we have all been
> using an unnecessary cross in all of oure implementations and reworks
> of Aai's code. Here's how your version would look with that part
> taken out, and an unnecessary "1 removed (and that extra "1 was also
> in all versions that I looked at today):
>
> A ([: ; ([: < (=&{: |.)"1 # (, }.)"1)"1 _) B
>
> Also, I was noticing that we do not have any editor support for
> recognizing or moving between matching parenthesis, and that would be
> handy when refactoring code like this. It's almost enough to make me
> want to start using emacs again (but I stopped because of RSI issues
> and my health takes precedence over ease of use).
>
> FYI,
>
> --
> Raul
>
> On Sun, Oct 21, 2012 at 3:43 AM, Linda Alvord <lindaalv...@verizon.net> wrote:
>> How this for a function in the new "Walking Downhill J"
>>
>> 'A B'=:3|L:0(([:<i.)"1)3 5,:5 4
>> k=: 13 :';x ([:<(,"1}.)"1#~(=&{:|.)"1)"1 _ y'
>> k
>> [: ; ([: < (,"1 }.)"1 #~ (=&{: |.)"1)"1 _
>>
>>
>> -----Original Message-----
>> From: programming-boun...@forums.jsoftware.com
>> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Dan Bron
>> Sent: Saturday, October 20, 2012 1:02 PM
>> To: programm...@jsoftware.com
>> Cc: programm...@jsoftware.com
>> Subject: Re: [Jprogramming] stitching matrices
>>
>> I would phrase this as "if you want to ensure dyadic invocations always
>> fail, these definitions..."
>>
>> The conceptual difference will become evident when Linda tries to substitute
>> these modified definitions for her originals in the context of (... |.)
>> (particularly in the case of f ).
>>
>> -Dan
>>
>>
>> Please excuse typos; composed on a handheld device.
>>
>> On Oct 20, 2012, at 12:19 PM, Raul Miller <rauldmil...@gmail.com> wrote:
>>
>>> If you actually wanted to only be using monadic definitions for f and
>>> g, these would be equivalent definitions:
>>>
>>> f=: =&{: :[:
>>>
>>> g=: ([:={:) :[:
>>>
>>> Here, you would be declaring that these verbs have empty dyadic domains.
>>>
>>> You could even get away with
>>>
>>> g=: [:={: :[:
>>>
>>> (Do you see why?)
>>>
>>> --
>>> Raul
>>>
>>> On Sat, Oct 20, 2012 at 2:57 AM, Linda Alvord <lindaalv...@verizon.net>
>>> wrote:
>>>> I am using them monadically.
>>>>
>>>> Linda
>>>>
>>>> -----Original Message-----
>>>> From: programming-boun...@forums.jsoftware.com
>>>> [mailto:programming-boun...@forums.jsoftware.com] On Behalf Of km
>>>> Sent: Saturday, October 20, 2012 2:54 AM
>>>> To: programm...@jsoftware.com
>>>> Subject: Re: [Jprogramming] stitching matrices
>>>>
>>>> Identical?
>>>>
>>>> f =: =&{:
>>>> g =: [:={:
>>>> 1 4 f 2 3 4
>>>> 1
>>>> 1 4 g 2 3 4
>>>> |domain error: g
>>>> | 1 4 g 2 3 4
>>>>
>>>> Kip Murray
>>>>
>>>> Sent from my iPad
>>>>
>>>>
>>>> On Oct 20, 2012, at 1:11 AM, "Linda Alvord" <lindaalv...@verizon.net>
>>>> wrote:
>>>>
>>>>> Here's a problem that bothers me about this example before I leave it.
>>>>>
>>>>>
>>>>>
>>>>> First establish that =&{: and [:={: are identical and compare
>>>>> tree and boxed versions:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> ]'A B'=:3|L:0(([:<i.)"1)3 5,:5 4
>>>>>
>>>>> ----------T-------┐
>>>>> │0 1 2 0 1│0 1 2 0│
>>>>> │2 0 1 2 0│1 2 0 1│
>>>>> │1 2 0 1 2│2 0 1 2│
>>>>> │ │0 1 2 0│
>>>>> │ │1 2 0 1│
>>>>> L---------+--------
>>>>>
>>>>> f=:=&{:
>>>>>
>>>>> g=:[:={:
>>>>>
>>>>> 5!:4 <'f'
>>>>>
>>>>> -- =
>>>>> -- & -+- {:
>>>>>
>>>>> 5!:4 <'g'
>>>>>
>>>>> -- [:
>>>>> --+- =
>>>>> L- {:
>>>>>
>>>>> B
>>>>>
>>>>> 0 1 2 0
>>>>> 1 2 0 1
>>>>> 2 0 1 2
>>>>> 0 1 2 0
>>>>> 1 2 0 1
>>>>>
>>>>> f B
>>>>>
>>>>> 1 0 0 1
>>>>> 0 1 0 0
>>>>> 0 0 1 0
>>>>>
>>>>> g B
>>>>>
>>>>> 1 0 0 1
>>>>> 0 1 0 0
>>>>> 0 0 1 0
>>>>>
>>>>>
>>>>>
>>>>> Now look at two "trees":
>>>>>
>>>>>
>>>>>
>>>>> elm=: 13 :'((=&{:)|.)"1 y'
>>>>>
>>>>> oak=: 13 :'(([:={:)|.)"1 y'
>>>>>
>>>>> 5!:4 <'elm'
>>>>>
>>>>> -- =
>>>>> -- & -+- {:
>>>>> ----+- |.
>>>>> -- " -+- 1
>>>>>
>>>>> 5!:4 <'oak'
>>>>>
>>>>> -- [:
>>>>> -----+- =
>>>>> ----+ L- {:
>>>>> -- " -+ L- |.
>>>>> L- 1
>>>>>
>>>>> 5!:2 <'elm'
>>>>>
>>>>> --------------T-T-┐
>>>>> │---------T--┐│"│1│
>>>>> ││--T-T--┐│|.││ │ │
>>>>> │││=│&│{:││ ││ │ │
>>>>> ││L-+-+---│ ││ │ │
>>>>> │L--------+---│ │ │
>>>>> L-------------+-+--
>>>>>
>>>>> 5!:2 <'oak'
>>>>>
>>>>> ---------------T-T-┐
>>>>> │----------T--┐│"│1│
>>>>> ││---T-T--┐│|.││ │ │
>>>>> │││[:│=│{:││ ││ │ │
>>>>> ││L--+-+---│ ││ │ │
>>>>> │L---------+---│ │ │
>>>>> L--------------+-+--
>>>>>
>>>>> B
>>>>>
>>>>> 0 1 2 0
>>>>> 1 2 0 1
>>>>> 2 0 1 2
>>>>> 0 1 2 0
>>>>> 1 2 0 1
>>>>>
>>>>> elm B
>>>>>
>>>>> 1 1 1 1 1
>>>>>
>>>>> oak B
>>>>>
>>>>> ran with error:
>>>>> |domain error: oak
>>>>> | oak B
>>>>> |[-16] c:\users\owner\j701-user\temp\42.ijs
>>>>>
>>>>>
>>>>>
>>>>> I'm not troubled by the fact that these results are different. I am
>>>>> bothered that their differences do not appear in the tree and boxed
>>>>> version, because I expect them both to be elm trees!
>>>>>
>>>>>
>>>>>
>>>>> If these versions don't show any differences shouldn't the results
>>>>> agree. I think the tree versions must be missing some way to tell them
>>>>> apart.
>>>>>
>>>>>
>>>>>
>>>>> Any thoughts?
>>>>>
>>>>>
>>>>>
>>>>> Linda
>>>>>
>>>>>
>>>>>
>>>>> Linda
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>>
>>>>> From: <mailto:programming-boun...@forums.jsoftware.com>
>>>>> programming-boun...@forums.jsoftware.com
>>>>>
>>>>> [ <mailto:programming-boun...@forums.jsoftware.com>
>>>>> mailto:programming-boun...@forums.jsoftware.com] On Behalf Of Raul
>>>>> Miller
>>>>>
>>>>> Sent: Friday, October 19, 2012 9:30 AM
>>>>>
>>>>> To: <mailto:programm...@jsoftware.com> programm...@jsoftware.com
>>>>>
>>>>> Subject: Re: [Jprogramming] stitching matrices
>>>>>
>>>>>
>>>>>
>>>>> On Fri, Oct 19, 2012 at 4:00 AM, Linda Alvord <
>>>>> <mailto:lindaalv...@verizon.net> lindaalv...@verizon.net>
>>>>>
>>>>> wrote:
>>>>>
>>>>>> G B
>>>>>
>>>>>> 1 1 1 1 1
>>>>>
>>>>>> H B
>>>>>
>>>>>> ran with error:
>>>>>
>>>>>> |domain error: H
>>>>>
>>>>>> | H B
>>>>>
>>>>>> |[-30] c:\users\owner\j701-user\temp\37.ijs
>>>>>
>>>>>
>>>>>> G WORKS! H DOESN'T!
>>>>>
>>>>>
>>>>>> How can I write the function H without & and get 1 1 1 1 ?
>>>>>
>>>>>
>>>>>
>>>>> Here's G B
>>>>>
>>>>> ((=&{:)|.)"1 $~&5 4 i.3
>>>>>
>>>>> 1 1 1 1 1
>>>>>
>>>>>
>>>>>
>>>>> Here, I rephrase G by eliminating the &
>>>>>
>>>>> (({:@[ = {:@])|.)"1 $~&5 4 i.3
>>>>>
>>>>> 1 1 1 1 1
>>>>>
>>>>>
>>>>>
>>>>> Note that I am testing the result at each step, here, to make sure
>>>>> I've not made any bad assumptions (for example, hypothetically
>>>>> speaking some intermediate results in these kinds of transformations
>>>>> might need some explicit treatment of rank).
>>>>>
>>>>>
>>>>>
>>>>> Here, I further rephrase G by also eliminating both of the @
>>>>> conjunctions
>>>>>
>>>>> ((([: {: [) = ([: {: ]))|.)"1 $~&5 4 i.3
>>>>>
>>>>> 1 1 1 1 1
>>>>>
>>>>>
>>>>>
>>>>> Here, I simplify slightly by using a hook
>>>>>
>>>>> (((([: {: [) = ]) {:)|.)"1 $~&5 4 i.3
>>>>>
>>>>> 1 1 1 1 1
>>>>>
>>>>>
>>>>>
>>>>> Here, I simplify again by using a cross hook
>>>>>
>>>>> (((= {:)~ {:) |.)"1 $~&5 4 i.3
>>>>>
>>>>> 1 1 1 1 1
>>>>>
>>>>>
>>>>>
>>>>> Good enough?
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> Raul
>>>>>
>>>>> --------------------------------------------------------------------
>>>>> --
>>>>>
>>>>> For information about J forums see
>>>>> <http://www.jsoftware.com/forums.htm>
>>>>> http://www.jsoftware.com/forums.htm
>>>>>
>>>>>
>>>>>
>>>>> --------------------------------------------------------------------
>>>>> --
>>>>>
>>>>> For information about J forums see
>>>>> <http://www.jsoftware.com/forums.htm>
>>>>> http://www.jsoftware.com/forums.htm
>>>>>
>>>>> --------------------------------------------------------------------
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>>>>> http://www.jsoftware.com/forums.htm
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