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					@ -101,6 +101,7 @@ class ArrangeBookActivity : VMBaseActivity<ArrangeBookViewModel>(R.layout.activi | 
				
			
			
		
	
		
		
			
				
					
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					                App.db.bookDao().observeByGroup(groupId) | 
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					                App.db.bookDao().observeByGroup(groupId) | 
				
			
			
		
	
		
		
			
				
					
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					            } | 
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					            } | 
				
			
			
		
	
		
		
			
				
					
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					        booksLiveData?.observe(this, Observer { | 
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					        booksLiveData?.observe(this, Observer { | 
				
			
			
		
	
		
		
			
				
					
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					            adapter.selectedBooks.clear() | 
				
			
			
		
	
		
		
			
				
					
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					            adapter.setItems(it) | 
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					            adapter.setItems(it) | 
				
			
			
		
	
		
		
			
				
					
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					            upSelectCount() | 
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					            upSelectCount() | 
				
			
			
		
	
		
		
			
				
					
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					        }) | 
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					        }) | 
				
			
			
		
	
	
		
		
			
				
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