This is the first chapter that has explored Solidity in depth. This chapter introduced Solidity, the layout of Solidity files including elements that can be declared at the top level in it. Constructs li pragma, contracts, and elements of contracts were discussed for a layout perspective. A complete immersion into the world of Solidity data types forms the core of this chapter. Value types and reference types were discussed in depth along with types like int, uint, fixed sized byte arrays, bytes, arrays, strings, structures, enumerations, addresses, boolean, and mappings were discussed in great length along with examples. Solidity provides additional data locations from complex types such as structs and arrays, which were also discussed in depth along with rules that govern their usage.
In the next chapter, we will focus on using some out-of-box variables and functions of smart contracts. Solidity provides numerous global variables and functions to help ease the task of obtaining...