<p>Bear with me if this is a naive question. Why is a struct that add sync.RWMutex will make lock()/unlock() available to the object? </p>
<p>I mean what go language feature is this?</p>
<hr/>**评论：**<br/><br/>Sythe2o0: <pre><p>Read up on <a href="https://golang.org/doc/effective_go.html#embedding" rel="nofollow">struct embedding</a>.</p></pre>marksteve4: <pre><p>this is the answer. Thanks</p></pre>Bake_Jailey: <pre><p>Just make sure you don't embed anything you don't want a potential user to use. If this is a mutex you intend to use within your implementation, just make it a normal struct field. Otherwise, you're saying that a user is free to call Lock and Unlock as a part of your exported API.</p></pre>epiris: <pre><p>I'm not sure what you're asking, are you talking about embedding a sync.RWMutex in a struct granting acesss to its method set? Or the fact sync.RWMutex implements sync.Locker interface?</p></pre>
