I thought that cd (15!:0) established a special environment to call a DLL and could only interface to DLLs. And the DLL had to reside in a library as a file of type DLL. How would I use cd to call a program that resided in a J noun?
On 7/13/07, Eric Iverson <[EMAIL PROTECTED]> wrote:
What you describe is exactly the facility provided by cd and it has been in J for years. ----- Original Message ----- From: "Don Guinn" <[EMAIL PROTECTED]> To: "Programming forum" <[email protected]> Sent: Friday, July 13, 2007 2:25 PM Subject: Re: [Jprogramming] J API > STSC's PC/APL+ had a []CALL function which I found quite useful when I > really needed to make a program perform. I used STSC's memory management > etc. and put assembly programs into variables which were executed via > []CALL. Very efficient because there was no environment switch. I did > similar things with PLI on IBM mainframes. Using the tools provided by the > caller and staying in the environment of the caller really helps > performance. I doubt that JSoftware would want to provide something like > this. >. . .
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