Re: Union member positions?

[Dennis via Digitalmars-d-learn]

On Tuesday, 17 August 2021 at 13:46:22 UTC, z wrote:

Is it possible to set a "position" on a union member?


You can use anonymous `struct` and `union` blocks.

```D
union UnionExample{
uint EAX;

struct {
//upper
union {
ushort EAHX;
struct {
ubyte EAHH;
ubyte EAHL;
}
}
//lower
union {
ushort EALX;
struct {
ubyte EALH;
ubyte EALL;
}
}
}
}
```

Re: Union member positions?

[ag0aep6g via Digitalmars-d-learn]

On 17.08.21 15:46, z wrote:
Is it possible to set a "position" on a union member? or is there is a 
language-integrated equivalent?
For example, to get access to each byte in an unsigned integer while 
still supporting the original type.

```D
///a single uint that would be accessed as two ushort, or four separate 
ubyte

union UnionExample{
uint EAX;

//upper
ushort EAHX;

ubyte EAHH;
ubyte EAHL;

//lower
ushort EALX;

ubyte EALH;
ubyte EALL;
}
```
Thanks.


union UnionExample
{
uint EAX;
struct
{
union // upper
{
ushort EAHX;
struct
{
ubyte EAHH;
ubyte EAHL;
}
}
union // lower
{
ushort EALX;
struct
{
ubyte EALH;
ubyte EALL;
}
}
}
}