Singleton: Difference between revisions
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type Singleton |
type Singleton |
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model |
model |
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text |
text greeting |
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fun speak = void by block do writeLine("I'm a singleton") end |
fun speak = void by block do writeLine(me.greeting + " I'm a singleton") end |
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end |
end |
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Singleton instance |
Singleton instance |
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type SomeOtherType |
type SomeOtherType |
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Singleton s1 = Singleton.getInstance() |
Singleton s1 = Singleton.getInstance() |
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s1. |
s1.greeting = "Hello" |
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Singleton s2 = Singleton.getInstance() |
Singleton s2 = Singleton.getInstance() |
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s2. |
s2.greeting.append(", World!") |
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writeLine(s1 + " and " + s2 + " are the same object: " + (s1 == s2) + ", " + s2. |
writeLine(s1 + " and " + s2 + " are the same object: " + (s1 == s2) + ", s2: " + s2.greeting) |
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s1.speak() # call instance method |
s1.speak() # call instance method |
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</syntaxhighlight> |
</syntaxhighlight> |
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{{out}} |
{{out}} |
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<pre> |
<pre> |
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§(0x02bf8098) and §(0x02bf8098) are the same object: ⊤, Hello, World! |
§(0x02bf8098) and §(0x02bf8098) are the same object: ⊤, s2: Hello, World! |
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I'm a singleton |
Hello, World! I'm a singleton |
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</pre> |
</pre> |
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