DRAGON

0x814f67fa286f7572b041d041b1d99b432c9155ee Copy

ERC20

This contract is an ERC20 token.

Name DRAGON

Symbol DRG

Decimals 8

Total Supply 442,695,970 DRG

About

Dragon Coins (DRG) is a cryptocurrency and operates on the Ethereum platform. Dragon Coins has a current supply of 442,695,970.07088 with 348,657,484.0176098 in circulation. The last known price of Dragon Coins is 0.00288235 USD and is up 3.11 over the last 24 hours. It is currently trading on 2 active market(s) with $0.00 traded over the last 24 hours. More information can be found at https://drgtoken.io/.

Stats

Public Functions 14

Event Types 4

Code Size 6,042 bytes

Events (4)

Approval Event

Parameters

owner	address
spender	address
value	uint256

Approval Event

Parameters

_owner	address
spender	address
value	uint

Burn Event

Parameters

from	address
value	uint256

Transfer Event

Parameters

from	address
to	address
value	uint256

Constants (2)

name Constant

string

DRAGON

symbol Constant

string

DRG

State Variables (10)

standard Variable

string

decimals Variable

uint8

totalSupply Variable

uint256

owner Variable

address

accountCount Variable

uint

burner Variable

address

burnerSet Variable

bool

balanceOf Variable

mapping(address => uint256)

accountIndex Variable

mapping(uint => address)

allowance Variable

mapping(address => mapping(address => uint256))

Internal Variable

Functions Expand All Collapse All

totalSupply

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function totalSupply() constant returns (uint256) {
  return totalSupply;
}

balanceOf

Parameters

Name	Type
tokenHolder	address

Properties

Visibility public

Mutability constant

Source Code

function balanceOf(address tokenHolder) constant returns (uint256) {
  return balanceOf[tokenHolder];
}

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_value must be less than or equal to balanceOf for the sender's address

balanceOf for _to + _value must be greater than or equal to balanceOf for _to

Source Code

function transfer(address _to, uint256 _value) returns (bool ok) {
  if (balanceOf[msg.sender] < _value) throw;
  if (balanceOf[_to] + _value < balanceOf[_to]) throw;

  appendTokenHolders(_to);
  balanceOf[msg.sender] -= _value;
  balanceOf[_to] += _value;
  Transfer(msg.sender, _to, _value);
  burnCheck(_to, _value);

  return true;
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_value must be less than or equal to balanceOf for _from

balanceOf for _to + _value must be greater than or equal to balanceOf for _to

_value must be less than or equal to allowance for _from for the sender's address

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) returns (bool success) {
  if (balanceOf[_from] < _value) throw;
  if (balanceOf[_to] + _value < balanceOf[_to]) throw;
  if (_value > allowance[_from][msg.sender]) throw;
  appendTokenHolders(_to);
  balanceOf[_from] -= _value;
  balanceOf[_to] += _value;
  allowance[_from][msg.sender] -= _value;
  Transfer(_from, _to, _value);

  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Source Code

function approve(address _spender, uint256 _value) returns (bool success) {
  allowance[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _value);
  return true;
}

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability constant

Source Code

function allowance(address _owner, address _spender)
  constant
  returns (uint256 remaining)
{
  return allowance[_owner][_spender];
}

changeOwnership

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function changeOwnership(address _owner) onlyOwner {
  owner = _owner;
}

setBurner

Parameters

Name	Type
_burner	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

burnerSet must not be true

Source Code

function setBurner(address _burner) onlyOwner {
  require(!burnerSet);
  burner = _burner;
  burnerSet = true;
}

burnDragons

Parameters

Name	Type
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyBurner checks for the following:

burner must be equal to the sender's address

Requirements

_amount must be less than or equal to balanceOf for the sender's address

totalSupply - _amount must be greater than or equal to 2100000000000000

Source Code

function burnDragons(uint256 _amount) onlyBurner {
  burn(_amount);
}

getAccountCount

Parameters

This function has no parameters.

Properties

Visibility public

Mutability constant

Source Code

function getAccountCount() constant returns (uint256) {
  return accountCount;
}

getAddress

Parameters

Name	Type
slot	uint256

Properties

Visibility public

Mutability constant

Source Code

function getAddress(uint256 slot) constant returns (address) {
  return accountIndex[slot];
}

approveAndCall

Parameters

Name	Type
_spender	address
_value	uint256
_extraData	bytes

Properties

Visibility public

Mutability transaction

Source Code

function approveAndCall(
  address _spender,
  uint256 _value,
  bytes _extraData
) returns (bool success) {
  tokenRecipient spender = tokenRecipient(_spender);
  if (approve(_spender, _value)) {
    spender.receiveApproval(msg.sender, _value, this, _extraData);
    return true;
  }
}

burn

Parameters

Name	Type
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_amount must be less than or equal to balanceOf for the sender's address

totalSupply - _amount must be greater than or equal to 2100000000000000

Source Code

function burn(uint256 _value) returns (bool success) {
  if (balanceOf[msg.sender] < _value) throw;
  if (totalSupply - _value < 2100000000000000) throw;
  balanceOf[msg.sender] -= _value;
  totalSupply -= _value;
  Burn(msg.sender, _value);
  return true;
}

burnFrom

Parameters

Name	Type
_from	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

totalSupply - _value must be greater than or equal to 2100000000000000

_value must be less than or equal to balanceOf for _from

_value must be less than or equal to allowance for _from for the sender's address

Source Code

function burnFrom(address _from, uint256 _value) returns (bool success) {
  if (totalSupply - _value < 2100000000000000) throw;
  if (balanceOf[_from] < _value) throw;
  if (_value > allowance[_from][msg.sender]) throw;
  balanceOf[_from] -= _value;
  allowance[_from][msg.sender] -= _value;
  totalSupply -= _value;
  Burn(_from, _value);
  return true;
}

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.

internal Dragon.burnCheck

Parameters

Name	Type
_tocheck	address
amount	uint256

Properties

Visibility internal

Mutability transaction

Source Code

function burnCheck(address _tocheck, uint256 amount) internal {
  if (_tocheck != burner) return;

  Burner burn = Burner(burner);
  burn.dragonHandler(amount);
}

internal Dragon.appendTokenHolders

Parameters

Name	Type
tokenHolder	address

Properties

Visibility private

Mutability transaction

Source Code

function appendTokenHolders(address tokenHolder) private {
  if (balanceOf[tokenHolder] == 0) {
    if (tokenHolder == burner) return;
    accountIndex[accountCount] = tokenHolder;
    accountCount++;
  }
}

DRAGON

ERC20

About link

Stats

Events (4) keyboard_arrow_up

Approval Event

Parameters help Event parameters list the data that an event contains.

Approval Event

Parameters help Event parameters list the data that an event contains.

Burn Event

Parameters help Event parameters list the data that an event contains.

Transfer Event

Parameters help Event parameters list the data that an event contains.

Constants (2) keyboard_arrow_up

name Constant

symbol Constant

State Variables (10) keyboard_arrow_up

standard Variable

decimals Variable

totalSupply Variable

owner Variable

accountCount Variable

burner Variable

burnerSet Variable

balanceOf Variable

accountIndex Variable

allowance Variable

Functions Expand All Collapse All

totalSupply keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

balanceOf keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

transfer keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

transferFrom keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

approve keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

allowance keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

changeOwnership keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyOwner checks for the following:

Source Code

setBurner keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyOwner checks for the following:

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

burnDragons keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Modifiers help Modifiers are additions to a function that typically make various checks before the function is run.

onlyBurner checks for the following:

Requirements help Requirements are checks that the function makes when it runs, and give you insight on what conditions are required for the function to succeed.

Source Code

getAccountCount keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

Properties

Source Code

getAddress keyboard_arrow_up

Parameters help Function parameters list what input the function expects from the user. Each parameter must be given a value.

About

Events (4)

Parameters

Parameters

Parameters

Parameters

Constants (2)

State Variables (10)

totalSupply

Parameters

balanceOf

Parameters

transfer

Parameters

Requirements

transferFrom

Parameters

Requirements

approve

Parameters

allowance

Parameters

changeOwnership

Parameters

Modifiers

setBurner

Parameters

Modifiers

Requirements

burnDragons

Parameters

Modifiers

Requirements

getAccountCount

Parameters

getAddress

Parameters

approveAndCall

Parameters

burn

Parameters

Requirements

burnFrom

Parameters

Requirements

internal Dragon.burnCheck

Parameters

internal Dragon.appendTokenHolders

Parameters