When I started learning Solidity I heard a lot about the promises of "composability". Trustless, permissionless, money legos would enable us to build a new internet. And since the code of smart contracts is public, they’re not only viewable but usable by anybody.But how do we actually use the lego blocks of others? Well, that’s why we’re here today! After grasping the concepts in this tutorial you will be able to use functionality created by developers in your own smart contracts. First, a pr...