Question

I have a string that will be used as a config value.. It is like 1|1|1 or 1|1|2 or 2|1|2 and so on. There are eight different combinations. Integers are either 1 or 2..

The problem is that I have to use pipe between integers. In regex pipe means “or” but I need it in my string..

[1-2][\|][1-2][\|][1-2] is what I came up with. Is this logical or are there any better options?

Answer 1

I would use:

([12])\|([12])\|([12])

So you catch both 1 and 2 and have them in a group for future usage.

The minus sign is not nessesary, because there is no character possible in ASCII between 1 and 2.