NuCypherToken¶
- details
Optional approveAndCall() functionality to notify a contract if an approve() has occurred.
- notice
ERC20 token
methods¶
allowance(address,address)¶
- details
Function to check the amount of tokens that an owner allowed to a spender.
params¶
- owner
address The address which owns the funds.
- spender
address The address which will spend the funds.
returns¶
- _0
A uint256 specifying the amount of tokens still available for the spender.
approve(address,uint256)¶
- details
Approve the passed address to spend the specified amount of tokens on behalf of msg.sender. Beware that changing an allowance with this method brings the risk that someone may use both the old and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce the spender’s allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
params¶
- spender
The address which will spend the funds.
- value
The amount of tokens to be spent.
approveAndCall(address,uint256,bytes)¶
- details
call the receiveApproval function on the contract you want to be notified. receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
- notice
Approves and then calls the receiving contract
balanceOf(address)¶
- details
Gets the balance of the specified address.
params¶
- owner
The address to query the balance of.
returns¶
- _0
An uint256 representing the amount owned by the passed address.
decreaseAllowance(address,uint256)¶
- details
Decrease the amount of tokens that an owner allowed to a spender. approve should be called when allowed_[_spender] == 0. To decrement allowed value is better to use this function to avoid 2 calls (and wait until the first transaction is mined) From MonolithDAO Token.sol Emits an Approval event.
params¶
- spender
The address which will spend the funds.
- subtractedValue
The amount of tokens to decrease the allowance by.
increaseAllowance(address,uint256)¶
- details
Increase the amount of tokens that an owner allowed to a spender. approve should be called when allowed_[_spender] == 0. To increment allowed value is better to use this function to avoid 2 calls (and wait until the first transaction is mined) From MonolithDAO Token.sol Emits an Approval event.
params¶
- addedValue
The amount of tokens to increase the allowance by.
- spender
The address which will spend the funds.
totalSupply()¶
- details
Total number of tokens in existence
transfer(address,uint256)¶
- details
Transfer token for a specified address
params¶
- to
The address to transfer to.
- value
The amount to be transferred.
transferFrom(address,address,uint256)¶
- details
Transfer tokens from one address to another. Note that while this function emits an Approval event, this is not required as per the specification, and other compliant implementations may not emit the event.
params¶
- from
address The address which you want to send tokens from
- to
address The address which you want to transfer to
- value
uint256 the amount of tokens to be transferred