It's not preprocessing. You pass a hashref to cmpthese, the values of which are computed when that line of code is executed. Those values in this case are method invocations which are evaluated where they occur. It should be no more surprising than some_sub( $obj->method() ) calling that sub with the value returned from the method call.

In reply to Re^4: Unexpected OO accessor benchmarks by Fletch
in thread Unexpected OO accessor benchmarks by cLive ;-)

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