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

Question

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".

Answer 1

Copy this somewhere:

extension CapExtension on String {
  String get inCaps => '${this[0].toUpperCase()}${this.substring(1)}';
  String get allInCaps => this.toUpperCase();
  String get capitalizeFirstofEach => this.split(" ").map((str) => str.capitalize).join(" ");
}

Usage:

final helloWorld = 'hello world'.inCaps; // 'Hello world'
final helloWorld = 'hello world'.allInCaps; // 'HELLO WORLD'
final helloWorld = 'hello world'.capitalizeFirstofEach; // 'Hello World'

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Old answer:

main() {
  String s = 'this is a string';
  print('${s[0].toUpperCase()}${s.substring(1)}');
}