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type Singleton
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model
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text greeting
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fun speak ← void by block do writeLine(me.greeting + " I'm a singleton") end
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end
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Singleton instance
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fun getInstance ← Singleton by block
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if instance æ null do instance ← Singleton() end
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return instance
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end
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type SomeOtherType
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Singleton s1 ← Singleton.getInstance()
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s1.greeting ← "Hello"
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Singleton s2 ← Singleton.getInstance()
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s2.greeting.append(", World!")
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writeLine(s1 + " and " + s2 + " are the same object: " + (s1 æ s2) + ", s2: " + s2.greeting)
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2023-07-01 11:58:00 -04:00
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s1.speak() # call instance method
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