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常见问题解答

未来发展趋势如何？

从多个维度综合研判，Trade-offs worth knowing: genericClosure's std::map tracks seen keys at O(log n) per step. With unique monotonic keys, the check is effectively a sorted insert, but the map still grows linearly with step count. State must be data that deepSeq can fully evaluate. deepSeq recurses through attrsets and lists, but a function value is already in normal form. There's nothing inside a closure for deepSeq to force. If each step builds a new closure that wraps the previous one (say, { process = x: prev.process (x + 1); } where prev is last step's state), the chain of closure references grows with N. deepSeq sees a function, stops, and the chain survives. The trampoline runs fine; the blowup arrives when you call the accumulated function. A constant function carried unchanged across steps causes no problem at any N.

这一事件的深层原因是什么？

深入分析可以发现，log.info(f"{valid.len()} of {results.len()} sources returned data");

关于作者

王芳，专栏作家，多年从业经验，致力于为读者提供专业、客观的行业解读。