Question

I am trying to match [and ].
but the when we also use the two for regular expression,
how can I write some pattern to match the two brackets?
Using \[ does not work as it gives out compiler error for the following line:

 regex(new Regex("([^.#; \\t\\r\n(){}\[\]',`\"][^; \\t\\r\\n(){}\[\]',`\"]*|[.][^; \\t\\r\\n(){}\[\]',`\"]+)"))

Answer 1

I’d go with

"""\[[^\]]+\]""".r

for the Regex.

"""\[[^\]]+\]""".r findAllIn """[a], [b], [123 Hello]""" toList
res2: List[String] = List([a], [b], [123 Hello])

The Regex would work fine as long as you won’t need to parse nested expressions as in

"""\[[^\]]+\]""".r findAllIn """[[a], [b]]""" toList
res4: List[String] = List([[a], [b])