Why is this a pointer
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Why 'this' is a pointer and not a reference?
为什么
Why is"this" not a reference?
请看比亚恩的回答。
Because"this" was introduced into C++ (really into C with Classes) before references were added. Also, I chose"this" to follow Simula usage, rather than the (later) Smalltalk use of"self".
Why is
this a pointer?< /块引用>
因为它是，而且它只是编程语言的设计方式。(我认为这也是因为它是C留下来的，但我不确定)。
rather than a reference?
< /块引用>
如果需要此引用，请使用
*this 。Can it never be
NULL ?< /块引用>
…不，怎么可能？