5
$\begingroup$

I want to find the word "circle" and "circles" in the list.

list = {"circle" , "picircle" , "circles" }

The regex code I wrote which isn't working:

StringCases[#, 
RegularExpression["(/\\b)(\\w*circle\\w*)(\\b//g)"]] & /@ list

The output I want:

{{circle},{},{circles}}

The output I get:

{{},{},{}}
$\endgroup$

2 Answers 2

7
$\begingroup$

The logic of you regular expression is not entirely clear to me.

Mathematica's RegularExpression does not need any delimiters and I don't think that there is a "global" switch. In any case, the following matches all single words "circle", "circles", "Circle" and "Circles":

list = {"circle", "picircle", "circles", "Circle"};
StringCases[#, RegularExpression["\\b[Cc]ircles?\\b"]] & /@ list
(* {{"circle"}, {}, {"circles"}, {"Circle"}} *)
$\endgroup$
2
  • $\begingroup$ how can I can change this so that it can be used for "Circles" as well? $\endgroup$
    – Aryan
    Commented Aug 10, 2020 at 9:44
  • 1
    $\begingroup$ @Aryan I have updated the answer. $\endgroup$
    – Natas
    Commented Aug 10, 2020 at 9:52
5
$\begingroup$
list = {"circle", "picircle", "circles"};
StringCases[#, 
   StartOfString ~~ "circle" | "circles" ~~ EndOfString] & /@ list
StringCases[#, RegularExpression["^(circle|circles)$"]] & /@ list
$\endgroup$
1
  • 1
    $\begingroup$ your solution works! i upvoted it, but I wanted it in RegEx, hence couldn't verify it as the answer :) $\endgroup$
    – Aryan
    Commented Aug 10, 2020 at 9:39

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