Blockwell

HarmonyOne

ERC20

This contract is an ERC20 token.

Name HarmonyOne
Symbol ONE
Decimals 18
Total Supply 12,459,539,943 ONE

About

Stats

Public Functions 15
Event Types 3
Code Size 9,002 bytes

Events (3) keyboard_arrow_up

Approval Event

Parameters help
tokenOwner
address help
spender
address help
tokens
uint help

OwnershipTransferred Event

Parameters help
_from
address help
_to
address help

Transfer Event

Parameters help
from
address help
to
address help
tokens
uint help

symbol Variable

string help

name Variable

string help

decimals Variable

uint8 help

_totalSupply Variable

uint help

owner Variable

address help

newOwner Variable

address help

balances Variable

mapping(address => uint) help
Internal Variable

allowed Variable

mapping(address => mapping(address => uint)) help
Internal Variable

Functions Expand All Collapse All

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure

Requirements help

Source Code
function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
  c = a + b;
  require(c >= a);
}

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure

Requirements help

Source Code
function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
  require(b <= a);
  c = a - b;
}

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure
Source Code
function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
  c = a * b;
  require(a == 0 || c / a == b);
}

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure

Requirements help

Source Code
function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
  require(b > 0);
  c = a / b;
}

Parameters help

Name Type
_newOwner
address help

Properties

Visibility help public
Mutability help transaction
Source Code
function transferOwnership(address _newOwner) public onlyOwner {
  newOwner = _newOwner;
}

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help transaction
Source Code
function acceptOwnership() public {
  require(msg.sender == newOwner);
  emit OwnershipTransferred(owner, newOwner);
  owner = newOwner;
  newOwner = address(0);
}

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help view
Source Code
function totalSupply() public view returns (uint256) {
  return _totalSupply - balances[address(0)];
}

Parameters help

Name Type
tokenOwner
address help

Properties

Visibility help public
Mutability help view
Source Code
function balanceOf(address tokenOwner) public view returns (uint256 balance) {
  return balances[tokenOwner];
}

Parameters help

Name Type
tokenOwner
address help
spender
address help

Properties

Visibility help public
Mutability help view
Source Code
function allowance(address tokenOwner, address spender)
  public
  view
  returns (uint256 remaining)
{
  return allowed[tokenOwner][spender];
}

Parameters help

Name Type
to
address help
tokens
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function transfer(address to, uint256 tokens) public returns (bool success) {
  balances[msg.sender] = safeSub(balances[msg.sender], tokens);
  balances[to] = safeAdd(balances[to], tokens);
  emit Transfer(msg.sender, to, tokens);
  return true;
}

Parameters help

Name Type
spender
address help
tokens
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function approve(address spender, uint256 tokens)
  public
  returns (bool success)
{
  allowed[msg.sender][spender] = tokens;
  emit Approval(msg.sender, spender, tokens);
  return true;
}

Parameters help

Name Type
from
address help
to
address help
tokens
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function transferFrom(
  address from,
  address to,
  uint256 tokens
) public returns (bool success) {
  balances[from] = safeSub(balances[from], tokens);
  allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
  balances[to] = safeAdd(balances[to], tokens);
  emit Transfer(from, to, tokens);
  return true;
}

Parameters help

Name Type
spender
address help
tokens
uint help
data
bytes help

Properties

Visibility help public
Mutability help transaction
Source Code
function approveAndCall(
  address spender,
  uint256 tokens,
  bytes memory data
) public returns (bool success) {
  allowed[msg.sender][spender] = tokens;
  emit Approval(msg.sender, spender, tokens);
  ApproveAndCallFallBack(spender).receiveApproval(
    msg.sender,
    tokens,
    address(this),
    data
  );
  return true;
}

Parameters help

This function has no parameters.

Properties

Visibility help public
Mutability help payable
Source Code
function() external payable {
  revert();
}

Parameters help

Name Type
tokenAddress
address help
tokens
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
function transferAnyERC20Token(address tokenAddress, uint256 tokens)
  public
  onlyOwner
  returns (bool success)
{
  return ERC20Interface(tokenAddress).transfer(owner, tokens);
}

Internal Functions Expand All Collapse All

Internal functions are parts of the contract that can't be used directly, but instead are used by the public functions listed above.