memcpy(ptr, data, 4194304);
I think if += would always have to make a copy, I would have opted to not support it for lists at all and just say .extend(), which does work in that tuple case.
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// Signal how many bytes we wrote，推荐阅读搜狗输入法2026获取更多信息
DOING IT THE RIGHT WAY，这一点在体育直播中也有详细论述