Singleton: Difference between revisions
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(→{{header|C++}}: A proper implementation should only (1) ensure that only one instance exists at any given moment; and (2) provide global access to that instance. Concurrency issues should be considered as a separate matter (in the general case).) |
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document.write( (new Singleton()).get() );</lang> |
document.write( (new Singleton()).get() );</lang> |
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=={{header|Julia}}== |
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Julia allows singletons as type declarations without further specifiers. There can be only one instance of such a type, and if more than one variable is bound to such a type they are actually all bound to the same instance in memory: |
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<lang julia> |
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type IAmaSingleton end |
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x = IAmaSingleton() |
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y = IAmaSingleton() |
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println("x == y is $(x == y) and x === y is $(x === y).") |
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</lang> |
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=={{header|Kotlin}}== |
=={{header|Kotlin}}== |
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