[Swift-devel] New syntax for appending to arrays

[Michael Wilde]

Ah, you mean specifically using the operator += conflicts with its use as an increment operator in C? I wasn't thinking of that - I was just commenting that "append will be useful".

I agree, now that you raise the issue. I need to study this length thread - Ive not been following it close enough.  Were any other symbols proposed for the operator other than the original "!"?

Would "<<" be more appropriate, suggestive of various stream-append operators? Or append() as a built-in function rather than an operator?

a << 123;

- Mike

----- Original Message -----
> $0,02 from me -- given that Swift has a C-like syntax, this syntax
> will surely confuse people??
> 
> On Jun 28, 2011, at 9:04 AM, Michael Wilde wrote:
> 
> > This sound good. I assume one should be able to append to any
> > dimension of a multi-dimensional array with +=.
> >
> > int a[][];
> >
> > a[5] += 1
> > a[5] += 2
> >
> > sets a[5][?] = 1
> >     a[5][?] = 2
> >
> > where ? is the index values chosen by +=
> >
> > Further, as you work out the typing rules for array subscripts,
> > should the following work?
> >
> > int a[][[];
> > int b[];
> > b += 100;
> > b += 200;
> > a += b; # <=== should this append a new array to a?
> >
> > - Mike
> >
> > ----- Original Message -----
> >>> As proposed earlier, a new syntax for appending values to
> >>> arrays have been implemented. Examples are given below.
> >>
> >> I think I have been won over to the += syntax.
> >>
> >>> Please note that, we still need to make sure that when we can
> >>> only append to an array, so to associate keys and multiple
> >>> values, (i think) we will need two(or more) dimensional arrays.
> >>
> >> yes. but there are already multi-dimensional arrays in swift.
> >>
> >> also, a one dimensional array should still work, like this:
> >>
> >> int a[];
> >> a += 232;
> >> a += 111;
> >>
> >> --
> >
> > --
> > Michael Wilde
> > Computation Institute, University of Chicago
> > Mathematics and Computer Science Division
> > Argonne National Laboratory
> >
> > _______________________________________________
> > Swift-devel mailing list
> > Swift-devel at ci.uchicago.edu
> > https://lists.ci.uchicago.edu/cgi-bin/mailman/listinfo/swift-devel

-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory