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Re: Mathlink problem with lists of reals

• To: mathgroup@smc.vnet.net
• Subject: [mg11180] Re: [mg11161] Mathlink problem with lists of reals
• From: jpk@max.mpae.gwdg.de
• Date: Wed, 25 Feb 1998 03:31:50 -0500

Hi,

You gave RealList as head of ns

> :Begin:
> :Function: writesample
> :Pattern: WriteSample[filename_String, ns_RealList] (* !!!! That's Your        
                                                         problem *)
> :Arguments: {filename, ns}
> :ArgumentTypes: {String, RealList}
> :ReturnType: Integer
> :End:
> 

This pattern will never match because Mathematica has no RealList data
type. In fact You must say

:Pattern: WriteSample[filename_String,ns_ /; VectorQ[ns,Real]]


ns has the head List[] and not RealList or what ever. RealList is a
``type'' for mprep -- not for Mathematica.

Hope that helps
Jens