return by reference

Introduction: This is a detailed description of PHP references. php references are used for delivery, PHP reference methods are returned, and PHP reference analysis is performed! The details page of PHP, related knowledge, skills, experience, and

Php reference details, php reference transfer use, php reference method return, php Reference analysis! Php reference (& amp;) details 2009-05-1314: 30php reference (that is, add the & amp; symbol before variables, functions, and objects) the

PHP reference in detail, PHP reference pass use, PHP reference method return, PHP reference analysis! PHP Reference (&) detailed2009-05-13 14:30PHP references (add & symbols before variables or functions, objects, etc.)The reference in PHP means:

PHP reference in detail, PHP reference pass use, PHP reference method return, PHP reference analysis! PHP Reference (&) detailed2009-05-13 14:30PHP references (add & symbols before variables or functions, objects, etc.)The reference in PHP means:

I often see such a statement: T & func (T & T). What is the difference between this statement and T func (t? The book explains how to improve efficiency? What operations are performed internally? This article uses eight small examples to thoroughly

When the function returns a value, a copy of the value is generated. When the return value is referenced, a copy of the value is not generated.For example, the following program provides four forms for returning a reference://*********************//

Https://www.cnblogs.com/yw-ah/p/5830458.htmlJava four types of references include strong references, soft references, weak references, and virtual references.Strong references:The garbage collector will never recycle as long as the reference

Original post address: http://www.cnblogs.com/bigshow/archive/2008/11/10/1330514.html     I often see such a statement: T & func (T & t). What is the difference between this statement and T func (T t? The book explains how to improve efficiency?

(Click here, next to the previous article) However, you may notice whether it is on-the-stack or on-the-heap (on the stack, every result returned from operator * has to tolerate a constructor call. You may remember that our initial goal was to avoid

I:You can define a function as a reference type. At this time, the return value of the function is the reference (alias) of a variable. Therefore, it is equivalent to returning a variable.Value assignment. This is similar to the return value of a