What is higher order function?

A higer order function is a function that take a function as a argument or return a function or do both that is called higher order function. Hope you understand.

Testing

  React.useEffect(() => {

    if (firstRender) return

    if (transition.state === 'idle' || transition.type === 'actionSubmission') return

    setPendingPath(transition.location.pathname)

  }, [transition.location])

  React.useEffect(() => {
    if (firstRender) return
    if (transition.state === 'idle' || transition.type === 'actionSubmission') return
    setPendingPath(transition.location.pathname)
  }, [transition.location])

# Binary Search in python


def binarySearch(array, x, low, high):

  # Repeat until the pointers low and high meet each other
  while low <= high:

    mid = low + (high - low)//2

    if array[mid] == x:
      return mid

    elif array[mid] < x:
      low = mid + 1

    else:
      high = mid - 1

  return -1


array = [3, 4, 5, 6, 7, 8, 9]
x = 4

result = binarySearch(array, x, 0, len(array)-1)

if result != -1:
  print("Element is present at index " + str(result))
else:
  print("Not found")