Ethereum Smart Contract Development

Functions

Solidity has basically two types of function calls. One is the internal, also called a message call, which does not make an actual call to the EVM. Another is the external function call, which is part of the contract interface and can be called from other contracts via transactions. These functions are mostly efficient when the contract is receiving large arrays of data. An external function cannot make internal calls.

Function visibility has classified solidity into four types, namely external, internal, public, and private. The private visibility only prevents other contracts from accessing or modifying information residing in the contract, but it is still visible to the whole world on the live public blockchain.

During this entire ...