英文:
How to convert dispatch_time_t to CFAbsoluteTime or struct timespec?
问题
使用Apple的Grand Central Dispatch（GCD）来创建定时器时，你会看到一个dispatch_time_t 64位整数，它保存了GCD的时间。但是，如何将其值转换为CFAbsoluteTime或struct timespec呢？
英文:
While using Apple's grand central dispatch (GCD) for a timer one can see dispatch_time_t 64-bit integer that holds the time for GCD.
How do you convert its value to CFAbsoluteTime or struct timespec though?
答案1
得分: 1
The dispatch_time_t is an opaque type. It is defined as:
> 一个相对抽象的时间表示；其中零表示“现在”，DISPATCH_TIME_FOREVER 表示“无限”，中间的每个值都是不透明的编码。
I would not advise trying to convert it to another type. I would suggest going back to where you created this dispatch_time_t object, and creating your other type there.
英文:
The dispatch_time_t is an opaque type. It is defined as:
> A somewhat abstract representation of time; where zero means “now” and DISPATCH_TIME_FOREVER means “infinity” and every value in between is an opaque encoding.
I would not advise trying to convert it to another type. I would suggest going back to where you created this dispatch_time_t object, and creating your other type there.
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