stringflutterdartlettercapitalize

How to capitalize the first letter of a string in dart?

How do I capitalize the first character of a string, while not changing the case of any of the other letters?

For example, "this is a string" should give "This is a string".

Solution

  • Since dart version 2.6, dart supports extensions:

    extension StringExtension on String {
    String capitalize() {
      return "${this[0].toUpperCase()}${this.substring(1).toLowerCase()}";
    }
}

    So you can just call your extension like this:

    import "string_extension.dart";

var someCapitalizedString = "someString".capitalize();