IERC20
ERC token interface
Functions
totalSupply
Returns the amount of tokens in existence.
balanceOf
Returns the amount of tokens owned by account
.
Parameters
Parameter
Type
Description
account
address
Account to be checked
transfer
Moves amount
tokens from the caller's account to recipient
. Returns a boolean value indicating whether the operation succeeded. Emits a Transfer event.
Parameters
Parameter
Type
Description
recipient
address
Recipient's address
amount
uint256
Amount to be transfered
allowance
Returns the remaining number of tokens that spender
will be allowed to spend on behalf of owner
through transferFrom. This is zero by default.
Parameters
Parameter
Type
Description
owner
address
Owner's address
spender
address
Spender's address
approve
Sets amount
as the allowance of spender
over the caller's tokens.
Parameters
Parameter
Type
Description
spender
address
Sped's address
amount
uint256
Allowance amount
transferFrom
Moves amount
tokens from sender
to recipient
using the allowance mechanism.
Parameters
Parameter
Type
Description
sender
address
Sender's address
recipients
address
Recipient's address
amount
uint256
Allowance amount
Events
Transfer
Emitted when value
tokens are moved from one account (from
) to another (to
).
Parameters
Parameter
Type
Description
from
address
Sender's address
to
address
Recipient's address
value
uint256
Allowance amount
Approval
Emitted when the allowance of a spender
for an owner
is set by a call to approve
. value
is the new allowance.
Parameters
Parameter
Type
Description
owner
address
Owner's address
spender
address
Spender's address
value
uint256
New allowance
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