Move Constructors - Converting Lvalues to Rvalues

[Dukc]

On Thursday, 3 October 2024 at 14:27:37 UTC, Imperatorn wrote:
> On Wednesday, 2 October 2024 at 18:57:24 UTC, Timon Gehr wrote:
>> On 10/2/24 20:00, Walter Bright wrote:
>>> [...]
>>
>> I don't think it affects how overloading works. You just treat 
>> it as a by-value argument as far as overloading and lifetime 
>> handling is concerned. In terms of ABI however, you pass the 
>> argument by reference.
>>
>> [...]
>
> What is the amount we need to pay to not get another attribute?

This probably wouldn't be a language attribute like `@nogc` or 
`@trusted`. It would be a simple UDA that is defined as a 
compiler intrinsic. It would likely be defined either at 
[core.attribute](https://dlang.org/phobos/core_attribute.html), 
or somewhere at `core.internal`.

And in any case it wouldn't be anything the D programmer has to 
deal with. It'd be used to define DRuntime functions, and maybe 
some low-level Phobos / utility library functions. But not at 
application code, nor even at normal library code.