I wanted a set made up from:
1. member 1
2. set { { 3, 4}, 8, { 8, 9}}
3. member 10
So, I believe I am creating my desired set correctly.
I am struggling with howw to extract the 8 from the middle
of the "2. set {{3, 4}, 8, {8,9}}'
Given testSet=:1; ((3,4); 8; (8,9)); 10
I would have thought it was 1 } 1 } testSet, but is not and
I get an index
error. I do a '# 1 } testSet' and it returns 1
----- Original Message Follows -----
From: Oleg Kobchenko <[email protected]>
To: Programming forum <[email protected]>
Subject: Re: [Jprogramming] sets within a set
Date: Thu, 16 Jul 2009 16:58:17 -0700 (PDT)
>There is a difference between
>
> 1 ; ((3 ; 4) ; 8 ; <8 ; 9) ; 10
>+-+---------------+--+
>|1|+-----+-+-----+|10|
>| ||+-+-+|8|+-+-+|| |
>| |||3|4|| ||8|9||| |
>| ||+-+-+| |+-+-+|| |
>| |+-----+-+-----+| |
>+-+---------------+--+
>
>and
>
> 1; ((3,4); 8; (8,9)); 10
>+-+-----------+--+
>|1|+---+-+---+|10|
>| ||3 4|8|8 9|| |
>| |+---+-+---+| |
>+-+-----------+--+
>
>
>
>
>> From: "[email protected]"
>> <[email protected]>
>> { 1, { { 3, 4}, 8, { 8, 9}}, 10} in J is:
>>
>> 1; ((3,4); 8; (8,9)); 10
>>
>> thanks again for the help
>>
>> ----- Original Message Follows -----
>> From: [email protected]
>> To: Programming forum
>> Subject: Re: [Jprogramming] sets within a set
>> Date: Thu, 16 Jul 2009 14:53:28 -0800
>>
>> >In general a set is a combination of elements or a set.
>> >
>> >Any set within a set can contain either elements or
>> >sets.
>> >How would boxed notation be used to represent something
>> >like:
>> >
>> >{ 1, { { 3, 4}, 8, { 8, 9}}, 10}
>> >
>> >----- Original Message Follows -----
>> >From: [email protected]
>> >To: Programming forum
>> >Subject: Re: [Jprogramming] sets within a set
>> >Date: Thu, 16 Jul 2009 14:35:05 -0800
>> >
>> >>setLess =:: -. [
>> >>
>> >>1 2 3 4 setLess 1 4
>> >>2 3
>> >>
>> >>so,
>> >>
>> >>1; 2; 3; 4 setLess 1; 4
>> >>
>> >>should return boxed
>> >>2 3
>> >>
>> >>but it returns
>> >>boxed 1 2 3 4
>> >>
>> >>and in my math notation
>> >>
>> >>{ 1, { 2, 3 }, 3 } setLess { 2, 3 } should return { 1,
>> >>3 } { 1, { 2, 3 }, 3 } setLess { 3 } should return
>> >>{ 1, {2 , 3}}
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>----- Original Message Follows -----
>> >>From: Raul Miller
>> >>To: Programming forum
>> >>Subject: Re: [Jprogramming] sets within a set
>> >>Date: Thu, 16 Jul 2009 15:52:48 -0400
>> >>
>> >>>On Thu, Jul 16, 2009 at 3:49 PM,
>> >>>> wrote: A =: 1 2 3 4
>> >>>> B =: 10 20 30 40
>> >>>> C =: 100 200 300 400
>> >>>>
>> >>>> How would one define the set:
>> >>>> bigSet =: 0.5 A B C 1000.5
>> >>>> in such a way that the cardinality, that is '#
>> >>>bigSet' is 5
>> >>>
>> >>> bigSet=: 0.5;A;B;C;1000.5
>> >>>
>
>
>
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