Presearch

0x88a3e4f35d64aad41a6d4030ac9afe4356cb84fa Copy

ERC20

This contract is an ERC20 token.

Name Presearch

Symbol PRE

Decimals 18

Total Supply 1,000,000,000 PRE

About

Stats

Public Functions 10

Event Types 3

Code Size 5,776 bytes

Library Use

Uses SafeMath for uint256.

Events (3)

Approval Event

Parameters

_owner	address
_spender	address
_value	uint256

OwnershipTransferred Event

Parameters

previousOwner	address
newOwner	address

Transfer Event

Parameters

_from	address
_to	address
_value	uint256

Constants (5)

name Constant

string

Presearch

symbol Constant

string

PRE

decimals Constant

uint8

maxSupply Constant

uint256

1000000000e18

initialSupply Constant

uint256

250000000e18

State Variables (6)

totalSupply Variable

uint

owner Variable

address

crowdsaleAddress Variable

address

unlockDate Variable

uint

balances Variable

mapping(address => uint256)

Internal Variable

allowed Variable

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

Internal Variable

Functions Expand All Collapse All

balanceOf

Parameters

Name	Type
_owner	address

Properties

Visibility public

Mutability view

Source Code

function balanceOf(address _owner) public view returns (uint256 balance) {
  return balances[_owner];
}

transfer

Parameters

Name	Type
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyPayloadSize checks for the following:

the number of values in undefined must be equal to 2 * 32 + 4

tradable checks for the following:

Requirements

_to must not be equal to UNKNOWN VALUE

Source Code

function transfer(address _to, uint256 _value)
  public
  onlyPayloadSize(2 * 32)
  tradable
  returns (bool success)
{
  require(_to != address(0));
  balances[msg.sender] = balances[msg.sender].sub(_value);
  balances[_to] = balances[_to].add(_value);
  Transfer(msg.sender, _to, _value);
  return true;
}

transferFrom

Parameters

Name	Type
_from	address
_to	address
_value	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyPayloadSize checks for the following:

the number of values in undefined must be equal to 2 * 32 + 4

tradable checks for the following:

Requirements

_to must not be equal to UNKNOWN VALUE

_from must not be equal to UNKNOWN VALUE

Source Code

function transferFrom(
  address _from,
  address _to,
  uint256 _value
) public onlyPayloadSize(2 * 32) tradable returns (bool success) {
  require(_from != address(0) && _to != address(0));
  uint256 _allowance = allowed[_from][msg.sender];
  balances[_from] = balances[_from].sub(_value);
  balances[_to] = balances[_to].add(_value);
  allowed[_from][msg.sender] = _allowance.sub(_value);
  Transfer(_from, _to, _value);
  return true;
}

approve

Parameters

Name	Type
_spender	address
_value	uint256

Properties

Visibility public

Mutability transaction

Requirements

_spender must not be equal to UNKNOWN VALUE

Source Code

function approve(address _spender, uint256 _value)
  public
  returns (bool success)
{
  require(_spender != address(0));
  allowed[msg.sender][_spender] = _value;
  Approval(msg.sender, _spender, _value);
  return true;
}

allowance

Parameters

Name	Type
_owner	address
_spender	address

Properties

Visibility public

Mutability view

Source Code

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

transferOwnership

Parameters

Name	Type
newOwner	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

newOwner must not be equal to UNKNOWN VALUE

Source Code

function transferOwnership(address newOwner) public onlyOwner {
  require(newOwner != address(0));
  OwnershipTransferred(owner, newOwner);
  owner = newOwner;
}

mint

Parameters

Name	Type
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Source Code

function mint(uint256 _amount) public onlyOwner {
  if (totalSupply.add(_amount) <= maxSupply) {
    balances[msg.sender] = balances[msg.sender].add(_amount);
    totalSupply = totalSupply.add(_amount);
  } else {
    revert();
  }
}

burn

Parameters

Name	Type
_amount	uint256

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

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

Source Code

function burn(uint256 _amount) public onlyOwner {
  require(balances[msg.sender] >= _amount);
  balances[msg.sender] = balances[msg.sender].sub(_amount);
  totalSupply = totalSupply.sub(_amount);
}

setCrowdsaleAddress

Parameters

Name	Type
newCrowdsaleAddress	address

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

newCrowdsaleAddress must not be equal to UNKNOWN VALUE

Source Code

function setCrowdsaleAddress(address newCrowdsaleAddress) public onlyOwner {
  require(newCrowdsaleAddress != address(0));
  crowdsaleAddress = newCrowdsaleAddress;
}

updateUnlockDate

Parameters

Name	Type
_newDate	uint

Properties

Visibility public

Mutability transaction

Modifiers

onlyOwner checks for the following:

owner must be equal to the sender's address

Requirements

_newDate must be less than or equal to 1512018000

Source Code

function updateUnlockDate(uint256 _newDate) public onlyOwner {
  require(_newDate <= 1512018000);
  unlockDate = _newDate;
}

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.

Presearch

ERC20

About

Stats

Library Use

Events (3) keyboard_arrow_up

Approval Event

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

OwnershipTransferred 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 (5) keyboard_arrow_up

name Constant

symbol Constant

decimals Constant

maxSupply Constant

initialSupply Constant

State Variables (6) keyboard_arrow_up

totalSupply Variable

owner Variable

crowdsaleAddress Variable

unlockDate Variable

balances Variable

allowed Variable

Functions Expand All Collapse All

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

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

onlyPayloadSize checks for the following:

tradable 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

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

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

onlyPayloadSize checks for the following:

tradable 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

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

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

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

transferOwnership 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

mint 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

burn 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

setCrowdsaleAddress 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:

Events (3)

Parameters

Parameters

Parameters

Constants (5)

State Variables (6)

balanceOf

Parameters

transfer

Parameters

Modifiers

Requirements

transferFrom

Parameters

Modifiers

Requirements

approve

Parameters

Requirements

allowance

Parameters

transferOwnership

Parameters

Modifiers

Requirements

mint

Parameters

Modifiers

burn

Parameters

Modifiers

Requirements

setCrowdsaleAddress

Parameters

Modifiers

Requirements

updateUnlockDate

Parameters

Modifiers

Requirements