java C++相当于Java this

C++ equivalent to Java this

提问by nobody

In Java you can refer to the current object by doing: this.x = x. How do you do this in C++?

在 Java 中，您可以通过执行以下操作来引用当前对象：this.x = x。你如何在 C++ 中做到这一点？

Assume that each of these code examples are part of a class called Shape.

假设这些代码示例中的每一个都是名为Shape.

Java:

爪哇：

public void setX(int x)
{
this.x = x;
}

C++:

C++：

public:
void setX(int x)
{
//?
}

回答by Benjamin Lindley

Same word: this

同一句话： this

Only difference is it is a pointer, so you need to use the ->operator:

唯一的区别是它是一个指针，所以你需要使用->运算符：

void setX(int x)
{
    this->x = x;
}

回答by Edwin Buck

The C++ equivalent is this, but there are a few differences.

C++ 等价物是this，但有一些区别。

This is a pointer to the object in question, not a reference; so, you must use pointer dereferencing operators before accessing fields or methods.

这是指向相关对象的指针，而不是引用；因此，您必须在访问字段或方法之前使用指针解引用运算符。

(*this).method(...)
(*this).field

or, using the more popular syntax

或者，使用更流行的语法

this->method(...)
this->field    

回答by Paul Sonier

The C++ equivalent is this; that is, the keyword is the same.

C++ 等价物是this; 也就是说，关键字是一样的。