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				https://github.com/ethereum/solidity
				synced 2023-10-03 13:03:40 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			36 lines
		
	
	
		
			899 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			36 lines
		
	
	
		
			899 B
		
	
	
	
		
			Solidity
		
	
	
	
	
	
contract C {
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	function index(uint256 len) public returns (bool)
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	{
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		uint[] memory array = new uint[](len);
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		for (uint256 i = 0; i < len; i++)
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			array[i] = i + 1;
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		for (uint256 i = 0; i < len; i++)
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			require(array[i] == i + 1, "Unexpected value in array!");
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		return array.length == len;
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	}
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	function accessIndex(uint256 len, int256 idx) public returns (uint256)
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	{
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		uint[] memory array = new uint[](len);
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		for (uint256 i = 0; i < len; i++)
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			array[i] = i + 1;
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		return array[uint256(idx)];
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	}
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}
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// ====
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// compileViaYul: true
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// ----
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// index(uint256): 0 -> true
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// index(uint256): 10 -> true
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// index(uint256): 20 -> true
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// index(uint256): 0xFF -> true
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// accessIndex(uint256,int256): 10,1 -> 2
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// accessIndex(uint256,int256): 10,0 -> 1
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// accessIndex(uint256,int256): 10,11 -> FAILURE
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// accessIndex(uint256,int256): 10,10 -> FAILURE
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// accessIndex(uint256,int256): 10,-1 -> FAILURE
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