[Swift-devel] Re: folding/sequential-while/whatever and accessing data in files

[Yong Zhao]

Just want to make a short comment that Ian once mentioned the syntax

int i<"myint.txt">;

should be valid, so you don't need the weird @extractint function. Mappers
should be able to extract swift structures from any kind of formats. I was
using CSVMapper to extract information in the montage workflow to drive
the execution depending on intermediate files.

Yong.

On Fri, 7 Sep 2007, Michael Wilde wrote:

> extractint is nice in the sense that any file produced by an app can be
> used to pass a (single?) return value.
>
> alternatively the RETVAL declaration makes it "seem" as if any function
> can return any number of scalar/list values. This hides the value
> passing as part of the calling mechanism for atomic functions.
>
> - mike
>
> Ben Clifford wrote:
> > it was fairly easy to make an @extactint function that lets you do this:
> >
> >  type file;
> >  file f <"myint.txt">;
> >  print(@extractint(f) + 1);
> >
> > However, that pretty much introduces a separate description of the file
> > contents (by using the extractint function) distinct from the mapping and
> > type system. ick.
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