Function when

** Executes a function only when a condition is met.**

Example

const logIfPositive = when((x: number) => x > 0, console.log);
logIfPositive(5); // Logs: 5
logIfPositive(-2); // (No output)

when<T>(predicate, fn): ((value: T) => void)
Type Parameters
- T
  The input type.
Parameters
- predicate: ((value: T) => boolean)
  Condition to check.
  - - (value): boolean
    - Parameters
      value: T
      Returns boolean
- fn: ((value: T) => void)
  Function to execute when the condition is true.
  - - (value): void
    - Parameters
      value: T
      Returns void
Returns ((value: T) => void)
- A conditional function.
- - (value): void
  - Parameters
    - value: T
    Returns void
- Defined in functional/higher-order/HOF.ts:41