Created
August 24, 2016 09:05
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simple block timer
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| def time[R](name: String)(block: => R): R = { | |
| val t0 = System.currentTimeMillis() | |
| val result = block | |
| val t1 = System.currentTimeMillis() | |
| println(s" $name time: " + (t1 - t0) + "ns") | |
| result | |
| } | |
| val Times = 1000000 | |
| case object dummy{ | |
| val data = List.fill(10000)("aaa") | |
| } | |
| case object data { | |
| val dlist = List.fill(Times)(dummy) | |
| } | |
| val reverseTime = time("reverseTime") { 1 to 1000 foreach { _ => | |
| data.dlist.reverse.head | |
| } | |
| } | |
| val lastTime = time("lastTime") { 1 to 1000 foreach { _ => | |
| data.dlist.last | |
| } | |
| } | |
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