On Tuesday, 20 January 2015 at 09:29:46 UTC, qqiang wrote:
I am writing a tree data structure, and I have the following
code:
```D
final class Node {
private {
int val_;
Node parent_;
Node left_;
Node right_;
}
@property
const(Node) maximum() const {
auto ret = this;
while (ret.right_) {
ret = ret.right_;
}
return ret;
}
}
```
It failed to compile and complaint that `cannot modify const
expression ret`。
Since `ret` is just a binding to a const class object, why
can't I rebind it to another const class variable?
Must I use pointers to cope with this?
Thx
You are looking for
http://dlang.org/phobos/std_typecons.html#.Rebindable
