Often data-size optimization is overlooked, or readability is preferred over data size. However, when paying for data storage on a blockchain, size does matter. Ethereum smart contract integers occupy 256 bits of space, which is typically larger than needed. A 256 bit integer can represent eight (8) different 32 bit integer values or 32 different 8 bit values. With gas prices dependent upon data size, it is important to utilize all bits of the integers you are paying to store on the blockchain.

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