Update Solidity/Easy.sol

Solidity/Easy.sol

@@ -2,51 +2,49 @@
 
 pragma solidity >=0.8.2 <0.9.0;
 
-/**
- * @title Storage
- * @dev Store & retrieve value in a variable
- * @custom:dev-run-script ./scripts/deploy_with_ethers.ts
- */
-contract Storage {
+
+contract SimpleStorage {
+    uint storedData;
+
+    function set(uint x) public {
+        storedData = x;
+    }
+
+    function get() public view returns (uint) {
+        return storedData;
+    }
+
+    function get_private() public view returns (uint) {
+        return not_get();
+    }
+
+    function not_get() private view returns (uint) {
+        return storedData;
+    }
+}
+
+contract StorageExtended {
 
    address private owner;
 
-    // event for EVM logging
     event OwnerSet(address indexed oldOwner, address indexed newOwner);
 
-    // modifier to check if caller is owner
     modifier isOwner() {
-        // If the first argument of 'require' evaluates to 'false', execution terminates and all
-        // changes to the state and to Ether balances are reverted.
-        // This used to consume all gas in old EVM versions, but not anymore.
-        // It is often a good idea to use 'require' to check if functions are called correctly.
-        // As a second argument, you can also provide an explanation about what went wrong.
         require(msg.sender == owner, "Caller is not owner");
         _;
     }
 
-    /**
-     * @dev Set contract deployer as owner
-     */
+    // SPoF
     constructor() {
-        console.log("Owner contract deployed by:", msg.sender);
-        owner = msg.sender; // 'msg.sender' is sender of current call, contract deployer for a constructor
+        owner = msg.sender;
         emit OwnerSet(address(0), owner);
     }
 
-    /**
-     * @dev Change owner
-     * @param newOwner address of new owner
-     */
     function changeOwner(address newOwner) public isOwner {
         emit OwnerSet(owner, newOwner);
         owner = newOwner;
     }
 
-    /**
-     * @dev Return owner address 
-     * @return address of owner
-     */
     function getOwner() external view returns (address) {
         return owner;
     }
@@ -54,18 +52,10 @@ contract Storage {
 
     uint256 number;
 
-    /**
-     * @dev Store value in variable
-     * @param num value to store
-     */
     function store(uint256 num) public {
         number = num;
     }
 
-    /**
-     * @dev Return value 
-     * @return value of 'number'
-     */
     function retrieve() public view returns (uint256){
         return number;
     }