7 lines
222 B
Scala
7 lines
222 B
Scala
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// immutable maps
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var map = Map(1 -> 2, 3 -> 4, 5 -> 6)
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map(3) // 4
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map = map + (44 -> 99) // maps are immutable, so we have to assign the result of adding elements
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map.isDefinedAt(33) // false
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map.isDefinedAt(44) // true
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