154 (One ~ One).parse("111") | 
   154 (One ~ One).parse("111") | 
   155 (One ~ One ~ One).parse("111") | 
   155 (One ~ One ~ One).parse("111") | 
   156 (One ~ One ~ One ~ One).parse("1111") | 
   156 (One ~ One ~ One ~ One).parse("1111") | 
   157   | 
   157   | 
   158 (One || Two).parse("111") | 
   158 (One || Two).parse("111") | 
         | 
   159   | 
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   160   | 
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   161 for (x <- List(1, 2, 3, 4)) println(x)  | 
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   162 for (x <- List(1, 2, 3, 4); if (2 < x)) yield (x.toString + x.toString)  | 
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   163 for (x <- List("2", "1", "3", "4", "1")) yield (x + x + x) | 
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   164   | 
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   165 (1, "one", '1')._3  | 
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   166 for ((x, y) <- List((1, "one"), (2, "two"), (3, "three"), (4,"many")); if (y == "many"))  | 
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   167   yield (x.toString + y)  | 
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   168   | 
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   169   | 
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   170 def square(n: Int) = { | 
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   171   n * n  | 
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   172 }  | 
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   173   | 
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   174 square(4 + 3 + 5)  | 
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   175   | 
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   176 def bar(): Int = { | 
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   177   bar()  | 
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   178   3  | 
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   179 }  | 
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   180   | 
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   181   | 
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   182 def foo(n: => Int) = { | 
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   183   print("finished") | 
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   184 }  | 
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   185   | 
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   186 foo(bar())  | 
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   187   | 
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   188 square(12) + square(10)  | 
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   189   | 
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   190   | 
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   191 def time_needed[T](i: Int, code: => T) = { | 
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   192   val start = System.nanoTime()  | 
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   193   for (j <- 1 to i) code  | 
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   194   val end = System.nanoTime()  | 
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   195   (end - start)/(i * 1.0e9)  | 
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   196 }  |