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I am not a dab at regulars but I have a task at hand and I think expressions might be handy. I want to check if a string like ‘stringList[0]’, ‘stringList[2]’ fits the pattern, that is I am trying to figure out whether a string is a textual representation of a collection’s element. What would that pattern look like? I will use java as a primary tool. Thank you so much in advance.
To match for ‘stringList[0]’ you can use
which matches stringList, followed by [ and the at least one digit followed by ]
Edit:
To match what was clarified
which I think matches any valid identifier. Starting with with any letter, _ or $ and then followed by one or more letter, number, _ or $ followed by [, then 1 or more digits and then another ].