code: function enforceVectorDtype(array, dtype) {
    validateDtype(dtype);
    var coerceFunc = COERCE_FUNC[dtype];
  
    // Coerce all elements to dtype
    for (var i = 0; i < array.length; i++) {
      array[i] = coerceFunc(array[i]);
    }
  
    // Construct vector
    return newVector(array, dtype);
  }
docs: Creates a new vector backed by the given array after coercing each element to the given dtype.