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- const PRECISION = 0.2; // Often called a Delta
- function isValid(time) { // Ensures 1 second has elapsed
- const expected = 1;
- // We only assert this : (expected - precision) <= time <= (expected + precision)
- return (expected - PRECISION <= time) && (expected + PRECISION >= time);
- }
- console.log(isValid(1.105));
- // => true
- console.log(isValid(0.95));
- // => true
- console.log(isValid(2));
- // => false
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