TransferHelper

The TransferHelper library provides functions for safely interacting with ERC-20 tokens and Ether transfers.

safeApprove

Safely approves spending of a specified amount of tokens by a target address.

function safeApprove(
    address token, 
    address to, 
    uint value) internal

Parameters:

Name	Type	Description
token	address	Address of the ERC-20 token.
to	address	Address that will be approved to spend the tokens.
value	uint	Amount of tokens to approve.

safeTransfer

Safely transfers a specified amount of tokens to a target address.

function safeTransfer(
    address token, 
    address to, 
    uint value) internal

Parameters:

Name	Type	Description
token	address	Address of the ERC-20 token.
to	address	Address to which the tokens will be transferred.
value	uint	Amount of tokens to transfer.

safeTransferFrom

Safely transfers a specified amount of tokens from one address to another.

function safeTransferFrom(
    address token, 
    address from, 
    address to, 
    uint value) internal

Parameters:

Name	Type	Description
token	address	Address of the ERC-20 token.
from	address	Address from which the tokens will be transferred.
to	address	Address to which the tokens will be transferred.
value	uint	Amount of tokens to transfer.

safeTransferETH

Safely transfers a specified amount of Ether to a target address.

function safeTransferETH(
    address to, 
    uint value) internal

Parameters:

Name	Type	Description
to	address	Address to which the Ether will be transferred.
value	uint	Amount of Ether to transfer.