What is the performance impact of Scala implicit type conversions?

Question

In Scala, is there a significant CPU or memory impact to using implicit type conversions to augment a class\'s functionality vs. other possible implementation choices?

Answer 1

JVM can optimize away the extra object allocations, if it detects that would be worthy.

This is important, because if you just inline things you end up with bigger methods, which might cause performance problems with cache or even decrease the chance of JVM applying other optimizations.