External function members

Why use this example

Use this pattern to explore how Solidity represents typed values and how state-changing expressions affect storage. The entry isolates external function members so its input, result, and state changes stay easy to compare.

Solidity to run

contract FunctionTarget {
  function increment(uint256 value) external pure returns (uint256) { return value + 1; }
}

FunctionTarget target = new FunctionTarget()
function(uint256) external pure returns (uint256) operation = target.increment
operation.address
operation.selector
operation(41)

Official Solidity reference

Compare this focused investigation with the complete language definition in the Solidity documentation.

What to expect

The function value exposes its deployed contract address and selector, then returns 42 when called.

Continue the investigation

Change a value, add another expression, or open Inspect after the run. Accepted entries remain available to the next entry, and the clean replay keeps the complete result reproducible.