23 lines
591 B
Dart
23 lines
591 B
Dart
// Greeter example from
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// <http://www.dartlang.org/docs/getting-started/interface.html>
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class Greeter implements Comparable {
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String prefix = 'Hello,';
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Greeter() {}
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Greeter.withPrefix(this.prefix);
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greet(String name) => print('$prefix $name');
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int compareTo(Greeter other) => prefix.compareTo(other.prefix);
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}
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void main() {
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Greeter greeter = new Greeter();
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Greeter greeter2 = new Greeter.withPrefix('Hi,');
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num result = greeter2.compareTo(greeter);
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if (result == 0) {
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greeter2.greet('you are the same.');
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} else {
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greeter2.greet('you are different.');
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}
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}
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