Re: [Chicken-users] array-lib - array() constructor - making empty array

[Kon Lovett]

On Nov 16, 2007, at 1:11 PM, metaperl.j wrote:

> Re: http://www.call-with-current-continuation.org/eggs/array-lib.html
>
> The signature for array implies that both prototype and dimensions are
> optional:
>
> procedure: (array [PROTOTYPE] SHAPE/DIMENSIONS [ELEMENT ...])
>
> However, my attempt to create an empty 2x3x4 array fails:

The 'array' procedure cannot create an empty array w/ non-zero  
dimensions. An un-initialized array can be created using 'make- 
array'. But an array w/ dimensionality but w/o storage is not  
possible thru the public api.

The 'array' procedure is meant as an analog of the 'vector' procedure  
so elements are kinda required. The documentation is misleading in  
indicating that elements are optional, not conditionally optional.

> #;67> (make-array-dimensions 2 3 4)
> #,(dimensions (2 3 4))
> #;68> (array (make-array-dimensions 2 3 4))
> Error: (array) wrong number of elements to construct array
> #;68> (array '#() (make-array-dimensions 2 3 4))
> Error: (array) wrong number of elements to construct array
>
>
> --
> View this message in context: http://www.nabble.com/array-lib--- 
> array%28%29-constructor---making-empty-array-tf4823929.html#a13801670
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>
>
>
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Best Wishes,
Kon