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1.3 节的 TrimSpace 函数会修改入参的切片 #539

@chenlujjj

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@chenlujjj

1.3 节切片内存技巧里的函数:

func TrimSpace(s []byte) []byte { b := s[:0] for _, x := range s { if x != ' ' { b = append(b, x) } } return b }
会改变传入的 s 切片,感觉不太妥当

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