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isBetween()

isBetween(bounds): (c) => boolean

Creates a predicate function that determines if a number is between two bounds (inclusive).

Parameters​

bounds​

[number, number]

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

Returns​

(c): boolean

Parameters​

c​

number

Returns​

boolean

Remarks​

  • Pure function with no side effects
  • Inclusive on both ends (>= lower bound and <= upper bound)
  • Automatically sorts bounds, so order doesn't matter in the tuple

Example​

const isValidScore = isBetween([0, 100]);
isValidScore(89);  // true
isValidScore(150); // false
isValidScore(0);   // true (inclusive)

// Order doesn't matter
const isInRange = isBetween([100, 0]);
isInRange(50); // true