Immutable surpassed Ethereum in monthly NFT trading volume, according to Binance Research and market data platforms.

Mutability and immutability are properties of certain classes of object. For example, these are immutable—once created they cannot be changed: numeric types (int and float) Booleans strings tuples ...

In Mutable and Immutable Objects, David O’Meara specifies that there are two approaches for ensuring methods are not overridden in a class designed to be immutable.