Ruby Language Numbers Creating an Integer
Example
0 # creates the Fixnum 0
123 # creates the Fixnum 123
1_000 # creates the Fixnum 1000. You can use _ as separator for readability
By default the notation is base 10. However, there are some other built-in notations for different bases:
0xFF # Hexadecimal representation of 255, starts with a 0x
0b100 # Binary representation of 4, starts with a 0b
0555 # Octal representation of 365, starts with a 0 and digits
