Merge pull request #14 from morenoh149/hm-update-sol-0.4.24

Update to solidity 0.4.24

Author: tomterado

contracts/erc20_tutorial.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.18;
+pragma solidity ^0.4.24;
 
 // ----------------------------------------------------------------------------
 // '0Fucks' token contract
@@ -74,7 +74,7 @@ contract Owned {
 
     event OwnershipTransferred(address indexed _from, address indexed _to);
 
-    function Owned() public {
+    constructor() public {
         owner = msg.sender;
     }
 
@@ -88,7 +88,7 @@ contract Owned {
     }
     function acceptOwnership() public {
         require(msg.sender == newOwner);
-        OwnershipTransferred(owner, newOwner);
+        emit OwnershipTransferred(owner, newOwner);
         owner = newOwner;
         newOwner = address(0);
     }
@@ -112,13 +112,13 @@ contract FucksToken is ERC20Interface, Owned, SafeMath {
     // ------------------------------------------------------------------------
     // Constructor
     // ------------------------------------------------------------------------
-    function FucksToken() public {
+    constructor() public {
         symbol = "0FUCKS";
         name = "0 Fucks Token";
         decimals = 18;
         _totalSupply = 100000000000000000000000000;
         balances[0x5A86f0cafD4ef3ba4f0344C138afcC84bd1ED222] = _totalSupply;
-        Transfer(address(0), 0x5A86f0cafD4ef3ba4f0344C138afcC84bd1ED222, _totalSupply);
+        emit Transfer(address(0), 0x5A86f0cafD4ef3ba4f0344C138afcC84bd1ED222, _totalSupply);
     }
 
 
@@ -146,7 +146,7 @@ contract FucksToken is ERC20Interface, Owned, SafeMath {
     function transfer(address to, uint tokens) public returns (bool success) {
         balances[msg.sender] = safeSub(balances[msg.sender], tokens);
         balances[to] = safeAdd(balances[to], tokens);
-        Transfer(msg.sender, to, tokens);
+        emit Transfer(msg.sender, to, tokens);
         return true;
     }
 
@@ -161,7 +161,7 @@ contract FucksToken is ERC20Interface, Owned, SafeMath {
     // ------------------------------------------------------------------------
     function approve(address spender, uint tokens) public returns (bool success) {
         allowed[msg.sender][spender] = tokens;
-        Approval(msg.sender, spender, tokens);
+        emit Approval(msg.sender, spender, tokens);
         return true;
     }
 
@@ -179,7 +179,7 @@ contract FucksToken is ERC20Interface, Owned, SafeMath {
         balances[from] = safeSub(balances[from], tokens);
         allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
         balances[to] = safeAdd(balances[to], tokens);
-        Transfer(from, to, tokens);
+        emit Transfer(from, to, tokens);
         return true;
     }
 
@@ -200,7 +200,7 @@ contract FucksToken is ERC20Interface, Owned, SafeMath {
     // ------------------------------------------------------------------------
     function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
         allowed[msg.sender][spender] = tokens;
-        Approval(msg.sender, spender, tokens);
+        emit Approval(msg.sender, spender, tokens);
         ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
         return true;
     }