Gas and data-efficient smart contracts

It's imperative to make smart contracts that not only handle transactions in a transparent and secure manner, but that are actually using the blockchain resources as efficiently as possible. For this reason, we'll explore how to make gas- and data-efficient code for Ethereum. In this section, we're going to cover the following topics:

• Making gas-efficient smart contracts
• Making data-efficient smart contracts

Making gas-efficient smart contracts

I'm sure you've seen several smart contracts containing lots of functions that feel like they are consuming too much gas to operate: functions such as those that manage lots of state variables or those that have several...