Thanks Roger,
I guess this is why we race Ferrari's and go shopping in minivans. :)
My first draft survives repeats, but I still find Arie's version beautiful (and
functional within the specs of not having repeated items).
t0=:((>.|."1)@(*=)@:>:@i.@#){ ' ',]
t0 'abcde'
a a
b b
c
d d
e e
t0 'abbbbccddde'
a a
b b
b b
b b
b b
c
c c
d d
d d
d d
e e
With improvements suggested by Arie's version,
t1=:(+.|.)@=@i.@#{"0 1 ' '&,.
t1 'abcde'
a a
b b
c
d d
e e
t1 'abbbccdde'
a a
b b
b b
b b
c
c c
d d
d d
e e
Cheers, bob
ps. Some day I will avoid the trap of repeated items and Self Classify (monadic
=)
On 2012-12-10, at 10:21 AM, Roger Hui wrote:
> The expression fails if the argument has duplicate items. e.g.
>
> ((+.|.)@={"0 1 ' '&,.)'aabbb'
> |length error
> | ((+.|.)@={"0 1' '&,.)'aabbb'
>
>
>
> On Mon, Dec 10, 2012 at 10:18 AM, bob therriault <[email protected]>wrote:
>
>> That is lovely Arie,
>>
>> It is that kind of elegance that I was chasing with my rougher attempts.
>>
>> Using the (+.|.) hook simplifies (|.+.]) precisely and the {" 0 1
>> combined with ' '&,. means that the selection of the string becomes a
>> choice in each row of displaying either the corresponding element of the
>> string or a blank.
>>
>> Cheers, bob
>>
>> On 2012-12-10, at 1:11 AM, Aai wrote:
>>
>>> ((+.|.)@={"0 1 ' '&,.)'abcde'
>>
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>>
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