AA key conversion woes

[H. S. Teoh]

On Tue, Apr 17, 2012 at 08:48:04PM +0200, Andrej Mitrovic wrote:
> On 4/17/12, Andrej Mitrovic <andrej.mitrovich at gmail.com> wrote:
> > On 4/17/12, H. S. Teoh <hsteoh at quickfur.ath.cx> wrote:
> >> But even then, I'm considering if .keys should return a mutable array if
> >> the key is a value type
> >
> > How about having .keys for mutable
> 
> Personally I use .keys often and expect them to be mutable. For example:
> 
> string[] atts = attributes.keys;
> sort(atts);
> 
> There is no "sorted" in phobos so I have to use the sort function
> which takes arguments by reference. I can't pass immutable arrays to
> it.
> 
> Sometimes I like to store an array of keys from multiple hashes, e.g.:
> string[] arr = hash.keys;
> arr ~= hash2.keys;
> 
> Long story short, making .keys immutable would break a lot of my code.
> I don't know if that's true for others as well..

What if .keys returns a tail-immutable array? You should still be able
to sort it, right?


T

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