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digitalmars.D.learn - cannot use UDA with same name as one of field's name

reply "sigod" <sigod.mail gmail.com> writes:
Hi. I have few questions about this piece of code.

```
import vibe.data.serialization;

struct User
{
	 name("_id") int id; // Error: function expected before (), not 
name of type string
	string name;
}
```

Is it even proper compiler behavior? Is there any way to bypass 
it without using alias (e.g. `alias named = name;`)?
Jun 23 2015
parent reply Steven Schveighoffer <schveiguy yahoo.com> writes:
On 6/23/15 4:53 PM, sigod wrote:

 Hi. I have few questions about this piece of code.

 ```
 import vibe.data.serialization;

 struct User
 {
       name("_id") int id; // Error: function expected before (), not
 name of type string
      string name;
 }
 ```

 Is it even proper compiler behavior?


Yes, name lookup looks in local scope first, then outside. D does not 
have a requirement to order declarations that aren't inside a function body.


 Is there any way to bypass it
 without using alias (e.g. `alias named = name;`)?


You can use  full.path.name

You may be able to use  .name, but I'm not sure that parses.

-Steve
Jun 23 2015
parent reply "sigod" <sigod.mail gmail.com> writes:
On Tuesday, 23 June 2015 at 22:10:43 UTC, Steven Schveighoffer 
wrote:

 You can use  full.path.name


```
Error: unexpected ( in declarator
Error: basic type expected, not "_id"
Error: found '"_id"' when expecting ')'
Error: no identifier for declarator .data.serialization.name(int)
Error: semicolon expected following function declaration
Error: declaration expected, not ')'
```


 You may be able to use  .name, but I'm not sure that parses.


```
Error:  identifier or  (ArgumentList) expected, not  .
Error: valid attributes are  property,  safe,  trusted,  system, 
 disable
Error: unexpected ( in declarator
Error: basic type expected, not "_id"
Error: found '"_id"' when expecting ')'
Error: no identifier for declarator .name(int)
Error: semicolon expected following function declaration
Error: declaration expected, not ')'
```
Jun 23 2015
parent reply Steven Schveighoffer <schveiguy yahoo.com> writes:
On 6/23/15 7:00 PM, sigod wrote:

 On Tuesday, 23 June 2015 at 22:10:43 UTC, Steven Schveighoffer wrote:

 You can use  full.path.name


 ```
 Error: unexpected ( in declarator
 Error: basic type expected, not "_id"
 Error: found '"_id"' when expecting ')'
 Error: no identifier for declarator .data.serialization.name(int)
 Error: semicolon expected following function declaration
 Error: declaration expected, not ')'
 ```


I'm not completely sure on the syntax, try adding some parens.

-Steve
Jun 23 2015
parent reply "Adam D. Ruppe" <destructionator gmail.com> writes:
On Tuesday, 23 June 2015 at 23:14:13 UTC, Steven Schveighoffer 
wrote:

 I'm not completely sure on the syntax, try adding some parens.


Yeah, I'm pretty sure it needs to be

 (full.name.here) void foo()
Jun 23 2015
parent "sigod" <sigod.mail gmail.com> writes:
On Tuesday, 23 June 2015 at 23:52:52 UTC, Adam D. Ruppe wrote:

 On Tuesday, 23 June 2015 at 23:14:13 UTC, Steven Schveighoffer 
 wrote:

 I'm not completely sure on the syntax, try adding some parens.


 Yeah, I'm pretty sure it needs to be

  (full.name.here) void foo()


Yep, something like this works.

```
 (vibe.data.serialization.name("_id")) int id;
```

But in this case `alias` looks better.
Jun 23 2015