Array : specify number of elements while declaration

slice : number of elements not specified while declaration

Array vs Slice Declaration

  var intArray = [10] int {0, 1, 1, 2, 3, 5, 8, 13, 21, 34}
  var slice1 [] int = intArray[2:5]  // index 2 to 4, size = 3

Array is fixed in size, cannot be appended(fixed).
We can append new element to slice(but slice create new slice of array with new and old elements).

slice can also be created using existing array using range

array[start: end]

slice manipulation

   NewSclice = append(oldSlice, newElement) //immutable