Finding these optimization opportunities can itself be a significant undertaking. It requires end-to-end understanding of the spec to identify which behaviors are observable and which can safely be elided. Even then, whether a given optimization is actually spec-compliant is often unclear. Implementers must make judgment calls about which semantics they can relax without breaking compatibility. This puts enormous pressure on runtime teams to become spec experts just to achieve acceptable performance.
[1] K. Lemström, J. Tarhio & T. Takala: “Color Dithering with n-Best Algorithm” (1996). ↑，这一点在safew官方版本下载中也有详细论述
，这一点在im钱包官方下载中也有详细论述
Watch: Lindsey Vonn shares her journey home after Olympics crash，推荐阅读同城约会获取更多信息
人 民 网 版 权 所 有 ，未 经 书 面 授 权 禁 止 使 用