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			13 lines
		
	
	
		
			410 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			13 lines
		
	
	
		
			410 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) public { } }
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| contract B is A {
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|   function f() pure public {
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|     A x = A(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: (250-254): Explicit type conversion not allowed from "string memory" to "contract A".
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