• apz28 (19/19) Apr 03 2021 @safe:
• Dennis (12/14) Apr 03 2021 Add the `scope` storage class to your `bytes()` function to tell

apz28 <home home.com> writes:

 safe:

class Foo
{
 safe:

     ubyte[] bytes()
     {
         return new ubyte[1];
     }
}

ubyte[] getBytes()
{
     scope foo = new Foo();
     return foo.bytes(); // Error: scope variable foo assigned to 
non-scope parameter this calling Foo.bytes
}

void main()
{	
     auto v = getBytes();
}

Dennis <dkorpel gmail.com> writes:

On Saturday, 3 April 2021 at 15:32:38 UTC, apz28 wrote:
     return foo.bytes(); // Error: scope variable foo assigned 
 to non-scope parameter this calling Foo.bytes

Add the `scope` storage class to your `bytes()` function to tell 
the compiler that the function won't escape any references to 
class members.
```D
      ubyte[] bytes() scope
      {
          return new ubyte[1];
      }
```

If you want the compiler to infer this, make it return `auto` or 
make it a template function.