Function count

count<K, V>(x: Lists<K, V>, ft: TestFunction<K, V>): number
Count values which satisfy a test.

Returns
Σtᵢ | tᵢ = 1 if ft(vᵢ) else 0; [kᵢ, vᵢ] ∈ x
Type Parameters
- K
- V
Parameters
- x: Lists<K, V>
  
  lists
- ft: TestFunction<K, V>
  
  test function (v, k, x)
Returns number
- Defined in index.ts:380

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