When I'm doing this in erlang, I got following result.
19> re:replace("(9 and 10) or (11 and 12)","(9 and 10)","13",[{return,list}]).
"(13) or (11 and 12)".
Is this correct?, why my answer isn't "13 or (11 and 12)" ?
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Hasitha
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The `(` and `)` create a group in a regex pattern. You need to either escape them or put inside `[...]`. – Wiktor Stribiżew Aug 28 '17 at 10:32
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2double escape, that is. You're working in the erl shell. So: 4> re:replace("(9 and 10) or (11 and 12)","\\\(9 and 10\\\)","13",[{return,list}]). – Marc Lambrichs Aug 28 '17 at 12:06