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Solidity

Solidity : Byte array instead of bytes

Overview

Use bytes instead of byte[] for lower gas consumption.

References

Solidity: Fixed-size Byte Arrays

LOW

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See also

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Solidity : Return value of transfer, transferFrom, or approve function of ERC-20 standard is always false.

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Solidity : Using approve function of the ERC-20 token standard

Solidity

Solidity : ERC-20 transfer should throw