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isNotBetween()

isNotBetween(bounds): (...args) => boolean

Creates a predicate function that determines if a number is not between two bounds (exclusive of range).

Parameters​

bounds​

[number, number]

The tuple containing the lower and upper bounds (order doesn't matter)

Returns​

(...args): boolean

Parameters​

args​

...[number]

Returns​

boolean

Remarks​

  • Pure function with no side effects
  • Negation of isBetween using functional composition
  • Automatically sorts bounds, so order doesn't matter in the tuple

Example​

const isOutOfRange = isNotBetween([10, 90]);
isOutOfRange(5);   // true (below range)
isOutOfRange(95);  // true (above range)
isOutOfRange(50);  // false (within range)
isOutOfRange(10);  // false (on boundary, inclusive)

// Useful for validation
const scores = [5, 25, 75, 95, 105];
const outliers = scores.filter(isNotBetween([0, 100])); // [105]