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			14 lines
		
	
	
		
			539 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			14 lines
		
	
	
		
			539 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
| // The constructor of a base class should not be visible in the derived class
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| contract A { constructor(string memory) { } }
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| contract B is A {
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|   function f() pure public {
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|     A x = A(address(0)); // convert from address
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|     string memory y = "ab";
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|     A(y); // call as a function is invalid
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|     x;
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|   }
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| }
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| // ----
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| // TypeError 3415: (124-303): No arguments passed to the base constructor. Specify the arguments or mark "B" as abstract.
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| // TypeError 9640: (252-256): Explicit type conversion not allowed from "string memory" to "contract A".
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