Compiler Rejects Functions Without Visibility (Solidity 0.5.0+): Public Getter or Explicit Accessors?
Since Solidity 0.5.0, the compiler rejects any function declared without an explicit visibility specifier. Before that release, a missing keyword silently defaulted to public — a classic route to accidental external access. Function visibility is now mandatory, but the neighboring state-variable decision remains open. State variables default to internal, yet
solidity