once

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Published: Jul 17, 2024 License: Apache-2.0 Imports: 2 Imported by: 0

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type Once

type Once struct {
	// contains filtered or unexported fields
}

Once 更强大的Once实现 在调用 f 失败的时候不会设置 done 并且可以返回失败信息 在失败的情况下也可以继续调用 Once 重试

func (*Once) Do

func (o *Once) Do(f func() error) error

Do 传入的函数f有返回值error,如果初始化失败,需要返回失败的error Do方法会把这个error返回给调用者

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