Reference

A reference value points to a sequence of memory locations that may contain an object or array.

Related concepts:  ValueTypeObjectArrayPrimitive

Closest Wikipedia entry:  Reference (computer science) — In computer science, a reference is a value that enables a program to indirectly access a particular data, such as a variable's value or a record, in the computer's memory or in some other storage device. The reference is said to refer to the datum, and accessing the datum is called dereferencing the reference. A reference is distinct from the datum itself.

Authoritative Definition

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Misconceptions about Reference
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