本文介绍了预定义布尔等式运算符==和!=的操作规则。当两个操作数相同时，==返回真；反之则返回假。而!=运算符在两个操作数不同时返回真，相同则返回假。对于布尔类型的操作数，!=与异或运算符^效果一致。
The predefined boolean equality operators are:
bool operator ==(bool x, bool y);
bool operator !=(bool x, bool y);
The result of == is true if both x and y are true or if both x and y are
false. Otherwise, the result is
false.
C# LANGUAGE SPECIFICATION
166
The result of != is false if both x and y are true or if both x and y are
false. Otherwise, the result is
true. When the operands are of type bool, the != operator produces the same
result as the ^ operator.
bool operator ==(bool x, bool y);
bool operator !=(bool x, bool y);
The result of == is true if both x and y are true or if both x and y are
false. Otherwise, the result is
false.
C# LANGUAGE SPECIFICATION
166
The result of != is false if both x and y are true or if both x and y are
false. Otherwise, the result is
true. When the operands are of type bool, the != operator produces the same
result as the ^ operator.
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