Or just
adv2 =: 1 : (':';'m*y-x')
See http://www.jsoftware.com/help/dictionary/d310n.htm
and http://www.jsoftware.com/help/dictionary/dicth.htm
On Wed, Dec 15, 2010 at 1:39 PM, bill lam <bbill....@gmail.com> wrote:
> In pre-historic J, multi-line explicit definition was defined as array of
> boxed strings.
> adv2=: 1 : ('';':';'m*y-x')
>
> Срд, 15 Дек 2010, Graham Parkhouse писал(а):
>> How can I write an adverb that returns a noun from 3 noun arguments x, m and
>> y as a *one liner*?
>>
>> Just 2 arguments is fine:
>> adv1=: 1 : 'm*y'
>> 3 adv1 10
>> 30
>>
>> 3 arguments like this doesn't work:
>> adv2=: 1 : 'm*y-x'
>> 5 (3) adv2 10
>> |domain error
>> | 5 (3)adv2 10
>>
>> Giving it a body works:
>> adv3=: 1 : 0
>> :
>> m*y-x
>> )
>> 5 (3) adv3 10
>> 15
>>
>> Is there a way to do it as one liner?
>>
>> Regards
>>
>> Graham Parkhouse
>>
>>
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>
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