These artifacts must always be at hand before, during and after a project, because they offer a primary point of reference for planning, design, implementation, maintenance, and optimization methods.

在项目开始之前、进行期间以及结束之后，这些工件必须始终记在心里，因为它们提供了规划、设计、实施、维护及优化方法参考的要点。

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The less frequently used methods are compiled at lower optimization levels, which are designed to complete quickly and produce a significant performance gain.

不经常使用的方法采用较低的优化级别进行编译，这样编译完成得很快并产生显著的性能收益。

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Reducing the length of these methods can make them more amenable to optimization by a JIT compiler.

而缩短这些方法的长度有助于使JIT编译器更易于优化它们。

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This is certainly true from what developers see under the hood, although it must be balanced against optimization for input methods and form factors in the user experience.

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These two mindsets reflect fundamentally polar methods of value generation: bottom-up creation versus top-down optimization.

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