How to pass a pointer by value

polaris · · 542 次点击    
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<p>Hi, I want to do this</p> <pre><code>func AddTask(task *Task){ //This must be a pointer StartTask(task) //... } func StartTask(task Task){ //... mySlice = append(mySlice, task) //... } </code></pre> <p>This is way simplified but Ï need a pointer in AddTask because it&#39;s a function exposed via net/RPC and I cannot have a pointer in StartTask because I use it in the builtin function append.</p> <p>Basicly I need a copy by value of a pointer.</p> <hr/>**评论:**<br/><br/>Manbeardo: <pre><p>Sounds like you&#39;re trying to dereference the pointer? You can do that with the <code>*</code> operator:</p> <pre><code>var value int var ptr *int ptr = &amp;value // get the address of value value = *ptr // dereference ptr </code></pre></pre>rjw57: <pre><p><a href="https://www.golang-book.com/books/intro/8#section1" rel="nofollow">https://www.golang-book.com/books/intro/8#section1</a></p> <blockquote> <p><code>*</code> is also used to “dereference” pointer variables. Dereferencing a pointer gives us access to the value the pointer points to. </p> </blockquote></pre>

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