[GitHub] [pulsar-client-go] wolfstudy opened a new issue #22: Judge interface is nil?

[GitBox <gi...@apache.org>]

wolfstudy opened a new issue #22: Judge interface is nil? 
URL: https://github.com/apache/pulsar-client-go/issues/22
 
 
   #### Expected behavior
   
   In go language, the interface contains two parts:
   
   - ptr
   - value
   
   This interface is nil only if they are all nil. So in the go language, we can't tell if an interface is nil.
   
   In [impl_producer.go#L95](https://github.com/apache/pulsar-client-go/blob/master/pulsar/impl_producer.go#L95)
   
   ```	
   for _, producer := range p.producers {
   	if producer != nil {
   		_ = producer.Close()
   	}
   }
   ```
   
   

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