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Square brackets [ ]
Use square brackets to create a set of characters to match.
When you include a series of characters in brackets, your expression matches 1 of those characters.
For example, the expression PART[123] matches:
- PART1
- PART2
- PART3
The expression doesn’t match:
- PART12
- PART23
- PART123
Hyphen -
Use the hyphen along with the brackets to create a range of characters to match.
For example, if you need to match any uppercase letter, you can specify [A-Z].
If you need to match any digit, you can specify [0-9].
If you needed to match all of the part numbers above, you could use the following expression:
[A-Z]+[0-9]+
- [A-Z] (matches any uppercase letter)
- + (one or more times)
- [0-9] (matches any digit)
- + (one or more times)