dart char is uppercase

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(" ");
}

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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Justin Watt 100 points

                                    import 'dart:io';

main() {
  print(&quot;Enter a string : &quot;);
  var str = stdin.readLineSync();

  if (str[0].toUpperCase() == str[0]) {
    print(&quot;The first character is uppercase&quot;);
  } else {
    print(&quot;The first character is not uppercase&quot;);
  }
}

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