IERC20Minimal

Contains a subset of the full ERC20 interface that is used in Pegasys V3

Functions

balanceOf

  function balanceOf(
    address account
  ) external view returns (uint256)

Returns the balance of a token

Parameters:

Name	Type	Description
account	address	The account for which to look up the number of tokens it has, i.e. its balance

Return Values:

Type	Description
uint256	number of tokens held by the account

transfer

  function transfer(
    address recipient,
    uint256 amount
  ) external returns (bool)

Transfers the amount of token from the msg.sender to the recipient

Parameters:

Name	Type	Description
recipient	address	The account that will receive the amount transferred
amount	uint256	The number of tokens to send from the sender to the recipient

Return Values:

Type	Description
bool	true for a successful transfer, false for an unsuccessful transfer

allowance

  function allowance(
    address owner,
    address spender
  ) external view returns (uint256)

Returns the current allowance given to a spender by an owner

Parameters:

Name	Type	Description
owner	address	The account of the token owner
spender	address	The account of the token spender

Return Values:

Type	Description
uint256	current allowance granted by owner to spender

approve

  function approve(
    address spender,
    uint256 amount
  ) external returns (bool)

Sets the allowance of a spender from the msg.sender to the value amount

Parameters:

Name	Type	Description
spender	address	The account which will be allowed to spend a given amount of the owners tokens
amount	uint256	The amount of tokens allowed to be used by spender

Return Values:

Type	Description
bool	true for a successful approval, false for unsuccessful

transferFrom

  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) external returns (bool)

Transfers amount tokens from sender to recipient up to the allowance given to the msg.sender

Parameters:

Name	Type	Description
sender	address	The account from which the transfer will be initiated
recipient	address	The recipient of the transfer
amount	uint256	The amount of the transfer

Return Values:

Type	Description
bool	true for a successful transfer, false for unsuccessful

Events

Transfer

  event Transfer(
    address from,
    address to,
    uint256 value
  )

Event emitted when tokens are transferred from one address to another, either via #transfer or #transferFrom.

Parameters:

Name	Type	Description
from	address	The account from which the tokens were sent, i.e. the balance decreased
to	address	The account to which the tokens were sent, i.e. the balance increased
value	uint256	The amount of tokens that were transferred

Approval

  event Approval(
    address owner,
    address spender,
    uint256 value
  )

Event emitted when the approval amount for the spender of a given owner's tokens changes.

Parameters:

Name	Type	Description
owner	address	The account that approved spending of its tokens
spender	address	The account for which the spending allowance was modified
value	uint256	The new allowance from the owner to the spender