| scala> class A { | |
| | private[this] val abc = 1 | |
| | | |
| | def print() = println(abc) | |
| | } | |
| # abc gets inlined by the compiler as a field | |
| [[syntax trees at end of cleanup]] // <console> | |
| package $line4 { |
| num #instances #bytes class name | |
| ---------------------------------------------- | |
| 1: 6443 80317016 [B | |
| 2: 15102 1939472 <methodKlass> | |
| 3: 15102 1749784 <constMethodKlass> | |
| 4: 1029 1161976 <constantPoolKlass> | |
| 5: 1029 959320 <instanceKlassKlass> | |
| 6: 891 697312 <constantPoolCacheKlass> | |
| 7: 3680 245496 [C |
| Every 1000 com.ning.compress.lzf.LZFOutputStream instances allocate 198976424 bytes. | |
| Every 1000 org.xerial.snappy.SnappyOutputStream instances allocate 67660104 bytes. |
I was curious about the results reported here, which reports that Scala's mutable maps are slower than Java's: http://www.infoq.com/news/2011/11/yammer-scala
In my tests, Scala's OpenHashMap equals or beats java's HashMap:
Insertion 100k elements (String keys) time in ms:
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