auto storage class - infer or RAII?
Charlie
charlies at nowhere.com
Sun Nov 12 10:17:08 PST 2006
I also am voting the majority, two different words - neither of which
are auto, 'var' for inference ( as is used allot in modern C family
languages ) , and 'scope' for RAII.
> 5) auto c = Class();
Oh the horror!!!
Charlie
Walter Bright wrote:
> The auto storage class currently is a little fuzzy in meaning, it can
> mean "infer the type" and/or "destruct at end of scope". The latter only
> has meaning for class objects, so let's look at the syntax. There are 4
> cases:
>
> class Class { }
>
> 1) auto c = new Class();
> 2) auto Class c = new Class();
> 3) auto c = some_expression();
> 4) auto Class c = some_expression();
>
> The ambiguity can be resolved by saying that if auto is used for type
> inference, i.e. cases (1) and (3), then it does not mean RAII. If it is
> not used for type inference, i.e. cases (2) and (4), then it does mean
> RAII.
>
> In the future, I'd like the following to work:
>
> 5) auto c = Class();
>
> which would mean type inference *and* RAII.
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