• Per =?UTF-8?B?Tm9yZGzDtnc=?= (13/13) Dec 19 2022 Have anybody considered dedicating a specific operator for
• Paul Backus (2/4) Dec 19 2022 Is `core.lifetime.move` not good enough?
• deadalnix (5/9) Dec 21 2022 There is no reason for either.
• Timon Gehr (4/15) Dec 21 2022 The reason is that you may want to be explicit about your moves and have...

Per =?UTF-8?B?Tm9yZGzDtnc=?= <per.nordlow gmail.com> writes:

Have anybody considered dedicating a specific operator for 
pass-by-move semantics in assignments and argument passing?

For instance,

```d
y = x;
z = f(y);
```

copies `x` and `y` whereas

```d
y = <<x;
z = f(<<y);
```

moves `x` and `y`.

Paul Backus <snarwin gmail.com> writes:

On Monday, 19 December 2022 at 11:12:54 UTC, Per Nordlöw wrote:
 Have anybody considered dedicating a specific operator for 
 pass-by-move semantics in assignments and argument passing?

Is `core.lifetime.move` not good enough?

deadalnix <deadalnix gmail.com> writes:

On Monday, 19 December 2022 at 17:43:12 UTC, Paul Backus wrote:
 On Monday, 19 December 2022 at 11:12:54 UTC, Per Nordlöw wrote:
 Have anybody considered dedicating a specific operator for 
 pass-by-move semantics in assignments and argument passing?

 Is `core.lifetime.move` not good enough?

There is no reason for either.

The compiler should definitively be able to move things when 
appropriate (if they are not reused after) and this is allowed by 
the current spec.

Timon Gehr <timon.gehr gmx.ch> writes:

On 12/21/22 17:50, deadalnix wrote:
 On Monday, 19 December 2022 at 17:43:12 UTC, Paul Backus wrote:
 On Monday, 19 December 2022 at 11:12:54 UTC, Per Nordlöw wrote:
 Have anybody considered dedicating a specific operator for 
 pass-by-move semantics in assignments and argument passing?

 Is `core.lifetime.move` not good enough?

 
 There is no reason for either.
 
 The compiler should definitively be able to move things when appropriate 
 (if they are not reused after) and this is allowed by the current spec.

The reason is that you may want to be explicit about your moves and have 
the type checker complain if it's actually used again. (This is also why 
core.lifetime.move is not great.)