How to replace all characters in a string in Dart except the space character

Question

String text = "replace all characters" --> 22 characters

text.replaceAll(RegExp('.'), '*');   

// result -> ********************** --> 22 characters

In this way, all characters change. How do I exclude the space character.

// I want it this

// result -> ******* *** ********** -> Characters 8 and 13 are empty.

Answer 1

What you want is a negative match:

void main() {
  String text = "replace all characters";
  print(text.replaceAll(RegExp('[^ ]'), '*'));
  // ******* *** **********
}

[^ ]Will match any character that is not space.