You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
## Usable Token
|
|
|
|
|
|
|
|
|
|
### Instructions
|
|
|
|
|
|
|
|
|
|
- Create a Smart Contract named `UsableToken`
|
|
|
|
|
- Like MinimalToken, its constructor takes as parameter an amount that is given initially to the deployer.
|
|
|
|
|
- Create a function `approve(address,uint)` that allows the owner of the token to approve a spender to spend a certain amount of tokens.
|
|
|
|
|
- Create a function `allowance(address,uint)` that returns the amount of tokens that a spender can spend on behalf of the owner.
|
|
|
|
|
|
|
|
|
|
### Notions
|
|
|
|
|
|
|
|
|
|
- [solidity docs](https://docs.soliditylang.org/)
|
|
|
|
|
- [learn X in Y](https://learnxinyminutes.com/docs/solidity/)
|
|
|
|
|
- [Remix IDE](https://remix.ethereum.org)
|
|
|
|
|
- [hardhat](https://hardhat.org)
|
