allocation of exactly the right size. If the number of items exceeds
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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要达成这个目标，光靠在 10 万到 20 万的舒适区里打转显然不够。零跑必须下沉，必须把手伸向体量最大、同时也最难啃的那块骨头—— 10 万元级市场。
Net international migration to the U.S. peaked at 2.7 million new entries in 2024, but has since sharply declined. It fell to 1.3 million last summer, according to January Census data, and then turned net negative, according to research from Brookings, meaning more people are leaving the U.S. than coming in. The private sector has weighed in, too, with Goldman Sachs economists reporting last week that immigration policies put in place over the past year have resulted in an 80% decline in net migration relative to the historical average.