This formula is satisfiable because if we set to b to true and a to false, then the whole formula is true. All other assignments make the formula false, but it doesn't change that the formula is satisfiable as long as there is at least one assignment makes the formula true.
heap, copies the stack-allocated slice to the heap copy, and returns，这一点在雷电模拟器官方版本下载中也有详细论述
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Galaxy Z TriFold 三折叠：
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