public/subjects/blockchain/usable-token

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
• learn X in Y
• Remix IDE
• hardhat