I've got a function that I want to call over a sequence of values (both are
determined at run time).
Is there something like call that accepts a sequence of arguments?
Something like this:
f args call-seq
Cheers,
Andrew Pennebaker
www.yellosoft.us
On Wed, Aug 24, 2011 at 10:04 PM, John Benediktsson <mrj...@gmail.com>wrote:
> Typically there are better ways to operate on sequences than to put all the
> elements on the stack, but you could:
>
> ( scratchpad ) { 0 1 2 3 } dup length firstn
>
> Better might be to use some combinators to act on the sequence each
> grabbing the element that they need (bi, tri, or the more general cleave):
>
> ( scratchpad ) { 0 1 2 3 } {
> [ first ]
> [ second ]
> [ third ]
> } cleave
>
>
>
>
> On Wed, Aug 24, 2011 at 6:50 PM, Andrew Pennebaker <
> andrew.penneba...@gmail.com> wrote:
>
>> Is there a word more general than firstn? I'd like to push all the
>> elements of a sequence onto the stack.
>>
>>
>> Cheers,
>>
>> Andrew Pennebaker
>> www.yellosoft.us
>>
>> On Sun, Aug 21, 2011 at 2:26 PM, Alexander J. Vondrak <
>> ajvond...@csupomona.edu> wrote:
>>
>>> first2: http://docs.factorcode.org/content/word-first2,sequences.html
>>>
>>> In general, firstn:
>>> http://docs.factorcode.org/content/word-firstn,sequences.generalizations.html
>>>
>>> Regards,
>>> --Alex Vondrak
>>> ________________________________________
>>> From: Andrew Pennebaker [andrew.penneba...@gmail.com]
>>> Sent: Sunday, August 21, 2011 11:20 AM
>>> To: Factor
>>> Subject: [Factor-talk] sequences and the stack
>>>
>>> The stack contains a sequence of number pairs:
>>>
>>> { { x1 y1 } { x2 y2 } { x3 y3 } ... }
>>>
>>> I want to map over the pairs, accessing xi and yi.
>>>
>>> [
>>> ! stack = { xi yi }
>>>
>>> ! ...
>>>
>>> ! stack = xi yi
>>> ] map
>>>
>>> What's the code that goes in !... ?
>>>
>>> Other than using nth, how can I do this? Is there a word that pops the
>>> elements of a sequence onto the stack?
>>>
>>> Cheers,
>>>
>>> Andrew Pennebaker
>>> www.yellosoft.us<http://www.yellosoft.us>
>>>
>>>
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