Что думаешь? Оцени!
If fn() takes longer than the timeout then the parent returns nil and nobody ever reads from ch. The child goroutine blocks on ch <- result and will never be cleaned up. Go garbage-collects objects, but it doesn’t garbage-collect goroutines blocked on channels that will never be read.
，这一点在搜狗输入法下载中也有详细论述
Фото: Alina Smutko / Reuters
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