Well, it is. But I’d like to present some context for why. 0x0 is a hexadecimal value that stands for zero. It is used in binary values to represent a null value. This flag is used for the same reason as the null flag. To use it, we are going to need to define a null value. It’s possible to create an empty string, which is null.
Empty string is null. The empty string has no length. It is also null. But it is legal to create a string that has a length. So we can create a string with a length of 10 (which is 5+1=6), by concatenating two string literals with a space in between.
The reason we used this flag as a flag is to show what kind of flag it is. You can’t have zero value for a flag. Or you can have both null and zero value for a flag. But its legal to write zero.
The null null value is a very bad thing because it will never get evaluated, so it will never get used. This is problematic because we really want to use this constant. We can create a string with the null value and a string with a length of 516. But we cannot create a string with a null value and a string with a length of 10.
When we need a string with a null value, we can use an empty string to create a string with a null value for that string. A string with a null value and a string with a length of 10 will be a string with an empty value.
The problem is that a string with a null value can’t possibly be used as an integer value. When we need to be able to calculate a string with a null value as an integer, we need to define what it means for a string to be a string with a null value. We cannot do that, so we cannot use 0x0 as a valid flag.
0x0 is not a valid flag because it does not contain a null value. So anything that contains 0x0 is a string with a null value. The only way we could use it as an integer would be if we used 0x1 as a valid flag and the flag would never be null, because an integer contains a non-null value.
In the same way that 0x0 is not a valid flag, 0x1 is not a valid integer. In order to be a valid integer, it must contain a non-null value. So 0x1 has a null value, and the only way to get a non-null value is to put it on the front of a number, and the only way to do that is to have the value zero.
One of the more interesting things about 0x0 is that it is never null. It’s not a null value, it’s a valid flag. It’s not like an integer in that you can’t have a value of 0x0 or 0x1 and it will always be 0 or 1.
When we talk about integers, we have some basic rules in place that govern how they work. For example, 0x0 is not a valid integer. 0x0 is undefined. 0x1 is null. 0x2 is undefined. 0x3 is undefined. 0x4 is undefined. 0x5 is undefined. 0x6 is undefined. 0x7 is undefined. 0x8 is undefined. 0x9 is undefined. 0xA is undefined.