[Swift-devel] file declaration inside foreach

[Mihael Hategan]

On Wed, 2007-04-25 at 10:04 -0500, Mihael Hategan wrote:
> That with the assumption that k[i-1] would work.
> It seems that k[i] = k[i-1] + i gets translated into this:
> assign(dpath="[i]", dvar=k, 
>   svar = sum(getFieldValue(var=k, path=concat("[]")), getFieldValue(i))
> )
> 
> Seems like k[i-1] is translated into the wrong thing there
> (path=concat("[]")).

It could, instead, be translated into: concat("[", subtraction(i, 1),
"]"). My guess is that would work.

> This comes from the fact that paths like [i] are passed directly instead
> of the value being extracted.
> 
> Yong, do you remember why we did this?
> 
> 
> On Wed, 2007-04-25 at 07:35 +0000, Ben Clifford wrote:
> > 
> > On Tue, 24 Apr 2007, Mihael Hategan wrote:
> > 
> > > Because the jobs are independent. You are creating iteratiion-local
> > > variables between which there is no dependency.
> > > 
> > > What you want is something like this:
> > > file[] lattice <...>;
> > > lattice[0] = initialLattice;
> > > for i in 1...2 {
> > >   lattice[i] = app(lattice[i-1]);
> > > }
> > 
> > I just tried this:
> > 
> > int r[] = [1:2:1];
> > int k[];
> > 
> > k[0]=100;
> > 
> > foreach i in r {
> > k[i] = k[i-1] + i;
> > }
> > 
> > and I get this:
> > 
> > $ swift for.swift 
> > Swift V 0.0405
> > RunID: 2hp99svgoyjd2
> > Execution failed:
> >         String index out of range: 0
> > 
> > 
> > :-(
> > 
> 
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