added scanLeft #26
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added scanLeft #26
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c-meier
reviewed
Jul 10, 2021
| @@ -297,6 +298,16 @@ object Generator{ | |||
| override def toString = s"$inner.map($func)" | |||
| } | |||
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| private class Scanned[+T, V](inner: Generator[V], initial: T, func: (T,V) => T) extends Generator[T]{ | |||
| def generate(f: T => Generator.Action) = { | |||
| var acc = initial | |||
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Suggested change
| var acc = initial | |
| var acc = initial | |
| f(acc) |
c-meier
reviewed
Jul 10, 2021
Comment on lines
+66
to
+67
| assert(Generator(1,2,3,4).scanLeft(100)(_ + _).toList == List(101,103,106,110)) | ||
| assert(Generator[Int]().scanLeft(100)(_ + _).toList == List()) |
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Suggested change
| assert(Generator(1,2,3,4).scanLeft(100)(_ + _).toList == List(101,103,106,110)) | |
| assert(Generator[Int]().scanLeft(100)(_ + _).toList == List()) | |
| assert(Generator(1,2,3,4).scanLeft(100)(_ + _).toList == List(100,101,103,106,110)) | |
| assert(Generator[Int]().scanLeft(100)(_ + _).toList == List(100)) |
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A useful and commonly implemented API.