[Solved] Why does the logical AND operator (&&) in Swift use short-circuit evaluation? — Ans: To avoid unnecessary evaluation if the first condition is false | Swift

Swift - Operators and Expressions

Why does the logical AND operator (&&) in Swift use short-circuit evaluation?

ATo convert Boolean values to integers

BTo avoid unnecessary evaluation if the first condition is false

CTo improve syntax readability

DTo always evaluate both conditions for accuracy

Step-by-Step Solution

Solution:

Step 1: Understand short-circuit evaluation
Logical AND stops evaluating if the first condition is false because the whole expression cannot be true.
Step 2: Reason why this is useful
This avoids unnecessary work and can prevent errors if the second condition depends on the first.
Final Answer:
To avoid unnecessary evaluation if the first condition is false -> Option B
Quick Check:
Short-circuit saves time by skipping evaluation [OK]

Quick Trick: AND stops if first condition is false to save time [OK]

Common Mistakes:

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Why does the logical AND operator (&&) in Swift use short-circuit evaluation?