immutable/mutable strings

[Zane]

Jarrett Billingsley Wrote:

> On Wed, Nov 19, 2008 at 8:13 PM, Zane <zane.sims at gmail.com> wrote:
> > Hey all,
> >
> > I am trying to get a full understanding of mutable/immutable string syntax.  I understand it to be true that 'char[]' is mutable and that 'string' is immutable and is the same as invariant(char)[].  If I am incorrect on any of this, please let me know.
> 
> That's all correct.
> 
> > On a slightly different note, why does the compiler allow me to set an immutable value to a mutable type if it is an error?  I am using dmd v1.033 -- Is this for v2.xx only?  Thanks for any information that you can provide and sorry if these questions have already been answered.
> 
> Yes.  The whole section on const and invariant is D2 only.  If you
> click the "D 1" link at the top left, you'll get to the D 1
> specification.  The Digital Mars website kind of .. "guides" you into
> D2 with little mention of D1.

Thanks for your quick response.  So then as in the example given, in D2, is this initialization allowed or was it a typo/mistake in the example?:

char[] s1 = "hello world";

Thanks again,
Zane