The problem of the Java code above is that it tries to serve many masters, one of them being the JIT, i.e. the code is written that way so the JIT can fully inl

The problem of the Java code above is that it tries to serve many masters, one of them being the JIT, i.e. the code is written that way so the JIT can fully inline the whole code. The first "final", the "StatelessOp", the "StreamOpFlag.NOT_SORTED | StreamOpFlag.NOT_DISTINCT", the "int flags" are all here because of performance.