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			8 lines
		
	
	
		
			156 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			8 lines
		
	
	
		
			156 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| abstract contract A {
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|     function a() public virtual;
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| }
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| contract B is A {
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| }
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| // ----
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| // TypeError 3656: (57-76): Contract "B" should be marked as abstract.
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