On Tuesday, 13 March 2018 at 20:49:16 UTC, Nathan S. wrote:
"onlineapp.d(16): Error: address of variable this assigned to
this with longer lifetime"
```d
[...]
struct SmallString
{
char[24] small;
char[] data;
[...]
this(scope const(char)[] s) @safe
{
[...]
data = small[0 .. s.length];
[...]
}
}
[...]
```
You're storing a reference to `small` in `data`. When a
SmallString is copied, that reference will still point to the
original `small`. When the original goes out of scope, the
reference becomes invalid, a dangling pointer. Can't have those
in @safe code.
The error message isn't exactly clear, though.
