On Sunday, 15 January 2017 at 15:56:30 UTC, Dsby wrote:
and : In https://github.com/dlang/phobos/blob/master/std/typecons.d#L147
debug(Unique) writeln("Unique destructor of ", (_p is null)? null: _p);
        if (_p !is null) destroy(_p);
        _p = null;
if the 'T' is a struct, it will not exec the Destory function. Is it a bug?

What do you mean? This works for me:
import std.stdio, std.typecons;

struct Foo {
    ~this() {
        writeln("I'm destroyed");

void main() {
    Unique!Foo foo = new Foo;
} // Prints "I'm destroyed"

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