Dart: replace a string between 2 other strings

Question

I would like to replace a string between 2 other strings in dart, for example :

var str="<!-- cells -->test<!-- cells -->";

the delimiters around will not change and will be always the same.

How to replace 'test' by 'test2' for example ?

Günter Zöchbauer · Accepted Answer · 2019-02-19 15:15:11Z

4

  var str = "<!-- cells -->test<!-- cells -->";
  var replace = 'foo';
  var counter = 0;

  final result = str.replaceAllMapped(RegExp(r'(<!-- )(.*?)( -->)'), (m) {
    return '${m[1]}$replace${counter++}${m[3]}';
  });

  print(result);

answered Feb 19, 2019 at 15:15

Günter Zöchbauer

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2 Comments

Julien Over a year ago

thank you but this solution replaces the string around and not the string "test"

Günter Zöchbauer Over a year ago

I see. I misread the question. Changing the RegExp to r'( -->)(.*?)(<!-- )' should do.

Julien · Accepted Answer · 2019-02-19 15:13:45Z

0

finally I found a solution quickly: replaceAllMapped

answered Feb 19, 2019 at 15:13

Julien

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