What does | and << mean?

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轮回少年 2021-01-18 23:37

Sorry if this is a common question but I don\'t know what it\'s called so I\'m having trouble searching for it.

How does this work:

view.autoresizing


      
      
        
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                   无人及你
                                             
                
                
                (楼主)
            
              
              
                2021-01-19 00:31
              

            
            
                        
These are C bit level operators.

| is binary or: 0001 | 0010 = 0011.

<< is a bit shift: 0001 << 1 = 0010.

They are used for bitmasks.
    
             
                                                        
            
            
              
                
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