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

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

Functions Expand All Collapse All

safeAdd keyboard_arrow_up

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure

Requirements help

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

safeSub keyboard_arrow_up

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure

Requirements help

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

safeMul keyboard_arrow_up

Parameters help

Name Type
a
uint help
b
uint help

Properties

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

safeDiv keyboard_arrow_up

Parameters help

Name Type
a
uint help
b
uint help

Properties

Visibility help public
Mutability help pure

Requirements help

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

transferOwnership keyboard_arrow_up

Parameters help

Name Type
_newOwner
address help

Properties

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

acceptOwnership keyboard_arrow_up

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);
    }

totalSupply keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

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

balanceOf keyboard_arrow_up

Parameters help

Name Type
tokenOwner
address help

Properties

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

allowance keyboard_arrow_up

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 (uint remaining) {
        return allowed[tokenOwner][spender];
    }

transfer keyboard_arrow_up

Parameters help

Name Type
to
address help
tokens
uint help

Properties

Visibility help public
Mutability help transaction
Source Code
    function transfer(address to, uint 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;
    }

approve keyboard_arrow_up

Parameters help

Name Type
spender
address help
tokens
uint help

Properties

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

transferFrom keyboard_arrow_up

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, uint 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;
    }

approveAndCall keyboard_arrow_up

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, uint 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;
    }

constructor keyboard_arrow_up

Parameters help

This function has no parameters.

Properties

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

transferAnyERC20Token keyboard_arrow_up

Parameters help

Name Type
tokenAddress
address help
tokens
uint help

Properties

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