How does the 'external' visibility modifier in solidity impact the security and functionality of digital currencies?

1 answers

• Nov 28, 2021 · 3 years ago
  The 'external' visibility modifier in solidity is an essential component for securing digital currencies. By using this modifier, developers can ensure that critical functions can only be accessed from outside the contract, adding an extra layer of protection against unauthorized access. This is particularly important for digital currencies, as they often involve sensitive operations such as transferring funds or updating balances. However, it's important to note that the 'external' modifier does have its limitations. It restricts internal function calls and interactions with other contracts, which may impact certain functionalities. Therefore, developers need to carefully evaluate the security and functionality trade-offs when deciding to use the 'external' modifier in their digital currency system.
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