author | Christian Urban <urbanc@in.tum.de> |
Tue, 29 Oct 2019 11:11:44 +0000 | |
changeset 280 | a057dc4457fc |
parent 263 | 5a16bcb4105e |
child 284 | 9a04eb6a2291 |
permissions | -rw-r--r-- |
263 | 1 |
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val ls_urban = List(("1", "a"), ("2", "a"), ("1", "c"), ("2", "a"), ("1", "c")) |
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val m_urban = groupById(ls_urban, Map()) |
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assert(m_urban.getOrElse("1", Nil).count(_ == "c") == 2) |
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assert(m_urban.getOrElse("1", Nil).count(_ == "a") == 1) |
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assert(m_urban.getOrElse("2", Nil) == List("a", "a")) |