In JRuby 1.6, we have eliminated the need for this data structure for generating backtraces, which means that many Ruby methods now have nearly zero artificial call overhead.
JRuby 1.6中，在生成回溯时不再需要这个数据结构了，这意味着很多Ruby方法现在的人为调用开销接近于0。
In JRuby 1.6, we have eliminated the need for this data structure for generating backtraces, which means that many Ruby methods now have nearly zero artificial call overhead.
JRuby 1.6中，在生成回溯时不再需要这个数据结构了，这意味着很多Ruby方法现在的人为调用开销接近于0。
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