10 lines
297 B
Scala
10 lines
297 B
Scala
// mutable maps (HashSets)
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import scala.collection.mutable.HashMap
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val hash = new HashMap[Int, Int]
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hash(1) = 2
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hash += (1 -> 2) // same as hash(1) = 2
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hash += (3 -> 4, 5 -> 6, 44 -> 99)
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hash(44) // 99
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hash.contains(33) // false
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hash.isDefinedAt(33) // same as contains
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hash.contains(44) // true
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