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.
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“母子诀别、兄弟同心……这些故事情节十分动人，舞台设计也很震撼。”格里深受触动，“中国人浴血奋战的艰辛历程，让我理解了中国为什么能取得今天的成就。”
Some fans told BBC Newsbeat they are glad festival-goers in Europe will get a chance to attend.