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Short circuiting in JS
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| let a; // falsy value | |
| let b = predefinedFunctionWhichReturnsFalse(); // false | |
| let c = computationallyHeavyFunctionWhichReturnsFalse(); // falsy value | |
| let d = false; | |
| let e = true; | |
| // Needs to evalaute every condition. | |
| let result = a | b | c | d | e; | |
| // Needs to evaluate only 'e'. | |
| let result = e | a | b | c | d; |
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