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isGreaterEqual()

isGreaterEqual<T>(threshold): (value) => boolean

Creates a predicate function that determines if a value is greater than or equal to a threshold.

Type Parameters​

T​

T extends string | number

The type of the values (number or string)

Parameters​

threshold​

T

The threshold value to compare against

Returns​

(value): boolean

Parameters​

value​

T

Returns​

boolean

Remarks​

  • Pure function with no side effects
  • Uses JavaScript's >= operator for comparison
  • Works with both numbers and strings (lexicographic comparison for strings)
  • Useful for array filtering and functional composition

Example​

const isAtLeast18 = isGreaterEqual(18);
isAtLeast18(21); // true
isAtLeast18(18); // true (inclusive)
isAtLeast18(16); // false

const isAtLeastB = isGreaterEqual('B');
isAtLeastB('C'); // true
isAtLeastB('B'); // true
isAtLeastB('A'); // false

// Useful with arrays
const scores = [45, 78, 92, 65, 88];
const passing = scores.filter(isGreaterEqual(70)); // [78, 92, 88]