EIP20Interface

contract EIP20Interface

Source: contracts/tokens/AttendanceToken/EIP20Interface.sol

Index

Reference

Events

  • Approval

    event Approval(address _owner, address _spender, uint256 _value)
    Parameters:
    _owner - address
    _spender - address
    _value - uint256

  • Transfer

    event Transfer(address _from, address _to, uint256 _value)
    Parameters:
    _from - address
    _to - address
    _value - uint256

Functions

  • allowance

    abstract function allowance(address _owner, address _spender) public view returns (uint256)
    Parameters:
    _owner - The address of the account owning tokens
    _spender - The address of the account able to transfer the tokens
    Returns:
    Amount of remaining tokens allowed to spent

  • approve

    abstract function approve(address _spender, uint256 _value) public returns (bool)

    `msg.sender` approves `_spender` to spend `_value` tokens.

    Parameters:
    _spender - The address of the account able to transfer the tokens
    _value - The amount of tokens to be approved for transfer
    Returns:
    Whether the approval was successful or not

  • balanceOf

    abstract function balanceOf(address _owner) public view returns (uint256)
    Parameters:
    _owner - The address from which the balance will be retrieved
    Returns:
    The balance

  • transfer

    abstract function transfer(address _to, uint256 _value) public returns (bool)

    Send `_value` token to `_to` from `msg.sender`.

    Parameters:
    _to - The address of the recipient
    _value - The amount of token to be transferred
    Returns:
    Whether the transfer was successful or not

  • transferFrom

    abstract function transferFrom(address _from, address _to, uint256 _value) public returns (bool)

    Send `_value` token to `_to` from `_from` on the condition it is approved by `_from`.

    Parameters:
    _from - The address of the sender
    _to - The address of the recipient
    _value - The amount of token to be transferred
    Returns:
    Whether the transfer was successful or not
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