Câu hỏi phỏng vấn C#
Câu hỏi

What is the difference between Equality Operator ( == ) and Equals() Method in C#?

Câu trả lời

Here is the difference between the equality operator (==) and the Equals() method in C#:

Equality Operator (==)

  • The equality operator (==) compares the values of two operands.
  • For value types (e.g., int, double, char), it compares the actual values stored in the variables.
  • For reference types (e.g., string, arrays, classes), it compares the references (memory addresses) of the objects, not their contents.
  • If the operands are of different types, the == operator returns false.

Equals() Method

  • The Equals() method is a virtual method inherited from the Object class.
  • It can be overridden in derived classes to provide custom comparison logic.
  • For value types, the default implementation of Equals() uses the == operator for comparison.
  • For reference ty...
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