immutable/mutable strings
Brad Roberts
braddr at puremagic.com
Wed Nov 19 18:22:29 PST 2008
Zane wrote:
> 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
Please file a bug. The whole cppstrings.html page hasn't been updated
to properly reflect 2.0 const semantics.
Later,
Brad
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