The terms ABI and Blockchain have the same meaning: both define methods for interacting with the binary contracts and the types of data they can contain. An ABI specifies the encoding process, which is mostly automated. A contract’s ABI is represented in a JSON array. In simple terms, an ABI is like an API, and it has very clear specifications. However, there are differences between an ABI and an API.
Unlike other data types, a tuple has multiple values. An example of a tuple is a string with a length of M bits, which is equal to the size of the length field. The variable is represented by a single byte with a value of 0 or 1. In a binary data structure, each byte represents one bit. The length field defines the size of a tuple. In the context of the blockchain, this value must be zero or one. The tuple is a list of tuples. solidity abi
The ABI specifies which functions are invoked. An ABI can be used to specify which function is invoked. A contract may include several functions. Using an ABI, a user can call a single function that performs the same function, or a collection of functions. It’s possible to have several functions in an Ethereum smart contract. The key is to choose a single ABI that ensures that the data formats are consistent across all of them.
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