[Swift-devel] multiple arguments

[Ben Clifford]

On Fri, 4 May 2007, Ben Clifford wrote:

> > When it comes to files, the scheme was a little simpler. @filename would
> > pass the file names of the fringe of a particular data tree. And
> > @filenames would do the same, but each leaf is a single argument.
> 
> when used in an app block something like:
> 
>  app { 
>    myapp "-in" @filenames(myarray[*]) "-type" "fast";
>  }
> 
> then @filenames needs to be able to return something that gets passed to 
> myapp as multiple parameters, rather than a single parameter with spaces 
> in it.
> 
> I think (?) that this is hard to do if @filenames returns a single value, 
> from a SwiftScript-theory perspective (though I think in the karajan 
> implementation, @filenames can return as many values as it wants?)

so perhaps what we should say is

@filenames(myarray)

returns an array of strings (so  @filenames(myarray)  has type string[])

and then say that the behaviour for string arrays being used in an 
application line is to make each element into its own argument.

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