什么是匿名对象？ [英] What is an Anonymous Object?

问题描述

什么是匿名对象？

C ++支持/有匿名对象吗？

Does C++ support/have Anonymous Objects?

推荐答案

C ++标准没有定义术语匿名对象，但是它可以理智地使用该术语来描述没有名称的任何对象：

The C++ standard does not define the term "anonymous object", but it stands to reason that one might sanely use the term to describe any object that has no name:

• 暂时： f（T（））;


• ： void func（int，int，int）;

• Temporaries: f(T());
• Unnamed function parameters: void func(int, int, int);

em> 不是

What I wouldn't count is dynamically-allocated objects:

从技术上讲，对象是任何存储区域[ ，其中包括组成由 new int;

Technically speaking, an "object" is any region of storage [1.8/1 in 2003], which would include the X bytes making up the integer dynamically-allocated by new int;.

在 int * ptr = new int; 指针（本身也是一个对象，不要忘记！）名称 ptr 整数本身没有除 * ptr 之外的名称。仍然，我会犹豫将其称为匿名对象。

In int* ptr = new int; the pointer (itself an object too, don't forget!) has the name ptr and the integer itself has no name other than *ptr. Still, I'd hesitate to call this an anonymous object.

但是，没有标准术语。

这篇关于什么是匿名对象？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！