On Mon, Jun 13, 2005 at 10:48:47AM -0700, chromatic wrote:
> >   # Problem;
> >   my $fh = BEGIN { open "some_file" err... };
> >   # Compile-time filehandle leaked into runtime!
> >   say =$fh;
> Perhaps I'm being very naive, but why is this a problem?  Maybe it's not
> the best way to do something, but I can see it being useful in some
> circumstances.

Er.  The BEGIN{} time thing is a FileHandle.

When compilation finishes, this program is saved as a .ast, or a .pbc,
or a .hs, or a .c file.

On runtime, $fh is supposed to contain a immutable constant value,
much as like if we had said:

    my $compile_time = BEGIN { time() };

Except it involves external resources.


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