Hi, I used the ERC20 implementation of openzeppelin contracts on my test token and I've found two functions which really confused me: increaseAllowance and decreaseAllowance :1234: The Code /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * Th…

Emmmm, they can use increaseAllowance and decreaseAllowance, but some tokens can not increase form a non-zero value. If user want to swap some USDT to get 1 Eth, assume 1 eth = 100 USDT, cause there will be slippage, so you are expect to approve a larger amount, maybe call increaseAllowance(110), b…

Explain the practical use of increaseAllowance and decreaseAllowance functions on ERC20

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Skyge September 6, 2021, 6:31am 4

Yes, you are right. Just approve a large number

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Explain the practical use of increaseAllowance and decreaseAllowance functions on ERC20

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