Created
November 5, 2015 12:38
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Parade of ones vs. circle of ones
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| scala> def one = { println("hey!"); 1 } | |
| one: Int | |
| scala> val endlessParadeOfOnes = Stream.continually(one) | |
| hey! | |
| endlessParadeOfOnes: scala.collection.immutable.Stream[Int] = Stream(1, ?) | |
| scala> endlessParadeOfOnes.take(5).sum | |
| hey! | |
| hey! | |
| hey! | |
| hey! | |
| res0: Int = 5 | |
| scala> val circleOfOnes: Stream[Int] = one #:: circleOfOnes | |
| hey! | |
| circleOfOnes: Stream[Int] = Stream(1, ?) | |
| scala> circleOfOnes.take(5).sum | |
| res1: Int = 5 |
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