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object Test {
def main(args: Array[String]): Unit = {
val traversable = 1 to 20 map (_.toString)
def normalize(m: Map[Char, Traversable[String]]) = m.map { case (k,v) => (k, v.toList) }
val groupedFromView = (traversable view).groupBy(_(0))
val groupedFromStrict = traversable.groupBy(_(0))
assert(normalize(groupedFromView) == normalize(groupedFromStrict))
}
}
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