Select the correct answerWhich of these operators can skip evaluating right hand operand?Options&|!&&
Question
Select the correct answer
Which of these operators can skip evaluating right hand operand?
Options:
&
|
!
&&
Solution
Break Down the Problem
- Identify the operators provided in the options: &, |, !, &&.
- Understand the behavior of each operator with respect to short-circuit evaluation.
Relevant Concepts
- Short-Circuit Operators: In programming, some operators can skip evaluating their right-hand operand based on the result of the left-hand operand. The two main types of these operators are:
- Logical AND (
&&
): If the left operand isfalse
, the right operand is not evaluated. - Logical OR (
||
): If the left operand istrue
, the right operand is not evaluated.
- Logical AND (
Analysis and Detail
-
&&
(Logical AND):- If the left operand is
false
, the expression evaluates tofalse
without evaluating the right operand. - Example:
false && (doSomething())
will skipdoSomething()
.
- If the left operand is
-
||
(Logical OR):- If the left operand is
true
, the expression evaluates totrue
without evaluating the right operand. - Example:
true || (doSomething())
will skipdoSomething()
.
- If the left operand is
-
&
(Bitwise AND) and|
(Bitwise OR):- Both operators always evaluate both operands, regardless of their values.
-
!
(Logical NOT):- This operator negates the value of the operand and does not evaluate a second operand.
Verify and Summarize
- From the analysis, the operators that can skip the evaluation of their right-hand operand are
&&
and||
. - However, the question specifies the operators given in the options. Therefore, the only operator among the provided options that can skip evaluating the right-hand operand is
&&
.
Final Answer
The operator that can skip evaluating the right-hand operand is &&
.
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