Question 75028 in Flutter Question posted in
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Extract substrings from a string in flutter using regex

I want to extract sub strings from a string using regex in flutter.

Eg: if string is "HI hello @shemeer how are you @nijin", the expected result will be [shemeer,nijin]

Input : String s= "HI hello @shemeer ul haq how are you @nijinsha rah"

Output: output=["shemeer ul haq","nijinsha rah"]

Is anybody knows it, please help me

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2

Answers


  1. 0

    You can split the string into words and then look for @ and generate list based on it.

        final names = data
        .split(" ")
        .where((element) => element.startsWith("@"))
        .map((e) => e.substring(1))
        .toList();

    Or use allMatches with RegExp(r'@w+') as pskink mentioned on comment.

    final names = RegExp(r'@w+')
    .allMatches(data)
    .map((e) => e.group(0)!.substring(1))
    .toList();
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  2. 0

    You could try to use this regex pattern: (?<=@)w+

    RegExp exp = RegExp(r'(?<=@)(w+)');
String str = 'HI hello @shemeer how are you @nijin';
Iterable<RegExpMatch> output = exp.allMatches(str);
for (final m in output) {
  print(m[0]);
}
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