Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
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The world's largest automaker has had a somewhat difficult relationship with battery-electric vehicles. Toyota was an early pioneer of hybrid powertrains, and it remains a fan today, often saying that given limited battery supply, it makes sense to build more hybrids than fewer EVs. Its first full BEV had a rocky start, suffering a recall due to improperly attached wheels just as the cars were hitting showrooms. Reviews for the awkwardly named bZ4x were mixed; the car did little to stand out among the competition.。关于这个话题，heLLoword翻译官方下载提供了深入分析
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If the A* calculation for a shortcut (in Step 3) finds it's now impassable, or if its actual detailed cost is significantly different (e.g., 20%) from the pre-calculated shortcut value: