| author | Christian Urban <urbanc@in.tum.de> |
| Sat, 22 Jun 2019 08:39:52 +0100 | |
| changeset 265 | 2692329287bb |
| parent 263 | 43297a2f7740 |
| child 284 | fc20e5f83f0e |
| 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"))
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