Re: [stack] unary functions from X to Y? => pipeline?

Le Thu, 5 Mar 2009 19:44:23 -0500,
John Nowak <[email protected]> s'exprima ainsi:

> In my email prior to this one, I suggested that the definition of  
> concatenative languages should be limited such that all functions are  
> unary functions from some aggregate X to some aggregate Y where X and  
> Y are both the same "type" (e.g. a stack or a stack/queue tuple). This  
> definition covers all existing concatenative languages. More  
> importantly however, it rules out languages like FP where functions  
> can do things like take a list and return a number.

Now I tend to see concatenative programming as expressing
	a process where each stage's output is the input of the next stage.

Rather close to pipeline. In this definition, the data format is unspecified, if not irrelevant, as well as the relative format of several stages' data.
Following John's "unary functions from X to Y", pipelines seem not far away. Or do I misinterpret the intent?

Denis
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