What is the "comma ok" idiom in error handling?
- It is used to recover from panics.
- It checks for array bounds.
- It is used to handle multiple errors.
- It is used in channel operations.
The "comma ok" idiom is commonly used in Go for error handling when working with channels. It is used to determine if a channel operation (send or receive) was successful. The expression value, ok := <-ch is used to receive a value from a channel ch. If ok is true, it means the value was received successfully; otherwise, it means the channel is closed or empty. This helps prevent panics and allows for graceful error handling when dealing with channels.
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