check if an array has filled all the elements of a given range code example

Example 1: check if array has same values javascript

const allEqual = arr => arr.every(v => v === arr[0]);
allEqual([1,1,1,1]);  // true

Example 2: python check if 3 values are equal

cat, dog, rabbit = 1, 1, 1
print (cat == dog == rabbit)
>>> True
cat, dog, donkey = 1, 1, 2
print (cat == dog == donkey)
>>> False