Cairo things to remember:
- Cairo memory is immutable, once you write the value of a memory cell, this cell cannot change in the future. Hence, we replace loops with recurssion.
- Loops are possible but we cannot call functions inside a loop and they are more complicated to implement.
"Cairo memory is immutable, which means that once a value was written to a memory cell, it cannot change."
Cairo does not have a built in less than '<' operator.