No matter what you assign to the b, it will be false since either the left or the right of the && operator is false.
保持足够的耐心：实话说我不属于耐心特别好的人。这几年逐渐控制自己的情绪，但有时候看到她做不好事情、看到她任性耍小脾气，我还是会忍不住发脾气，还是会批评她、催促她。希望新的一年，我会更好的保持耐心，引导孩子帮助她成长。
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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.
（作者为习近平文化思想研究中心重庆市协同研究基地特约研究员）