- Hands-On Design Patterns with Swift
- Florent Vilmart Giordano Scalzo Sergio De Simone
- 45字
- 2021-07-02 14:45:11
Organizing execution with groups and semaphores
Groups and semaphores help you to organize the execution of your program when you need to do the following:
- Wait for one or more tasks to complete
- Ensure that a resource has proper access control, across multiple contexts
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