Reference Types

mapping, struct, arrays

Reference types, unlike value types, don’t store their values directly within the variables themselves.

They store the address of the situation where the worth is stored. The variable holds the pointer to a different memory location that holds the particular data.

Passing by reference

• Both the variables are pointing to the same address location. Both the variables will share the same values and change committed by one is reflected in the other variable.

• When a reference type variable is assigned to another variable or when a reference type variable is sent as an argument to a function, EVM creates a new variable instance and copies the pointer from the original variable into the target variable.