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logical operator comparison table

Subject	use	evaluate	have purpose		is an instance of	indicate
!			to negate the value of the operand	if a unary operator uses a prefix notation then the unary operator appears before its operand	unary operator	logical NOT
&	an infix notation	both its operands	to return true if both operands evaluate to true		logical operator
&&	an infix notation	its second operand only if the first operand returns true	to return true if both operands evaluate to true		short circuit operator	logical AND
|	an infix notation	both its operands	to return true if at least one of its operands evaluates to true		logical operator
||	an infix notation	its second operand only if the first operand returns false	to return true if at least one of its operands evaluates to true		short circuit operator	logical OR

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