April 2018
Intermediate to advanced
222 pages
5h 28m
English
One Solidity type that was not discussed in the last chapter is the var data type. var is a special type that can only be declared within a function. There cannot be a state variable in a contract of type var. Variables declared with the var type are known as implicitly typed variable because var does not represent any type explicitly. It informs the compiler that its type is dependent and determined by the value assigned to it the first time. Once a type is determined, it cannot be changed.