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// retoor <retoor@molodetz.nl>
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import "dataset" for Dataset
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var ds = Dataset.memory()
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System.print(ds.tables.count) // expect: 0
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ds["users"].insert({"name": "Alice"})
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System.print(ds.tables.count) // expect: 1
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System.print(ds.tables.contains("users")) // expect: true
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ds["products"].insert({"name": "Widget"})
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System.print(ds.tables.count) // expect: 2
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System.print(ds.tables.contains("products")) // expect: true
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ds["orders"].insert({"total": 100})
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System.print(ds.tables.count) // expect: 3
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ds.close()
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