catch: Difference between revisions

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hint str _exception;
hint str _exception;
};
};
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|seealso= [[Exception handling]] [[try]] [[throw]]
|seealso= [[Exception handling]] [[try]] [[throw]]
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Latest revision as of 19:48, 3 September 2024

Hover & click on the images for description

Description

Description:
Processes code when an exception is thrown in a try block. The exception caught can be found in the _exception variable.
Groups:
Program Flow

Syntax

Syntax:
tryBlock catch code
Parameters:
tryBlock: Exception Type
code: Code
Return Value:
Anything

Examples

Example 1:
try { throw "invalid argument" } catch {hint str _exception};
Example 2:
123 try { if (_this != 123) throw "invalid argument" } catch { hint str _exception };
Example 3:
The correct usage of shorthand alt syntax:
try { if (a > b) throw "Error: some error"; // OK // the command argument is static } catch { hint str _exception; }; try { _someFunc = { // ... }; if (a > b) throw (call _someFunc); // NOT OK // the command argument is dynamic // _someFunc is called first to get the value regardless of (a > b) outcome } catch { hint str _exception; }; try { _someFunc = { // ... }; if (a > b) then { throw (call _someFunc) }; /// OK // the command argument is dynamic // _someFunc is only called when (a > b) is true } catch { hint str _exception; };

Additional Information

See also:
Exception handling try throw

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
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