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import collection._
object Test extends App {
def compare(s1: String, s2: String) {
assert(s1 == s2, s1 + "\nvs.\n" + s2)
}
compare(List(1, 2, 3, 4).aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, "1234")
compare(List(1, 2, 3, 4).par.aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, "1234")
compare(Seq(0 until 100: _*).aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, (0 until 100).mkString)
compare(Seq(0 until 100: _*).par.aggregate(new java.lang.StringBuffer)(_ append _, _ append _).toString, (0 until 100).mkString)
}
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