Try and catch a revert

Why use this example

Use this pattern to test contract composition, external calls, events, and return values inside one reproducible run. The entry isolates try and catch a revert so its input, result, and state changes stay easy to compare.

Solidity to run

contract Flaky {
  function check(uint256 value) external pure returns (uint256) {
    require(value > 10, "too small");
    return value;
  }
}
Flaky flaky = new Flaky()
uint256 result
try flaky.check(3) returns (uint256 value) { result = value; } catch { result = 99; }
result

What to expect

The external call reverts for value 3, the catch branch handles it, and the final result is 99.

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.