33 lines
415 B
D
33 lines
415 B
D
module strategy.quackbehavior;
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import std.stdio : writeln;
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abstract interface QuackBehavior
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{
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void quack();
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}
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class Quack : QuackBehavior
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{
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override void quack()
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{
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writeln("Quack");
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}
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}
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class Squeak : QuackBehavior
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{
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override void quack()
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{
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writeln("Squeak");
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}
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}
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class MuteQuack : QuackBehavior
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{
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override void quack()
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{
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writeln("Silence");
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}
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}
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