Don't waste time optimizing this unless you've profiled the code and you really are spending significant time in it — and you won't be.
请不要浪费时间对这个问题进行优化，除非您已经对代码进行了仔细的分析，并且真正要花费大量时间在这上面——可能您并不希望如此。
Because of our JIT technology, we can offer performance higher than MacRuby as well because we can take advantage of profiled information to generate faster machine code.
由于我们独特的JIT技术，我们能够提供比MacRuby更加优异的性能。这项技术能够高效地利用程序剖析信息，从而产生更加快速的机器代码。
To use performance profiling, we need to identify which code blocks need to be profiled.
要使用性能分析日志，我们需要确定哪些代码块需要分析。
To use performance profiling, we need to identify which code blocks need to be profiled.
要使用性能分析日志，我们需要确定哪些代码块需要分析。
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