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Lou Montana (talk | contribs) m (Text replacement - "{{since" to "{{Since") |
Lou Montana (talk | contribs) m (Text replacement - "_{10,} " to "") |
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{{Command|Comments= | {{Command|Comments= | ||
| arma1 |Game name= | | arma1 |Game name= | ||
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|1.00|Game version= | |1.00|Game version= | ||
| Throws an exception. The exception is processed by first [[catch]] block. This command will terminate further execution of the code. | | Throws an exception. The exception is processed by first [[catch]] block. This command will terminate further execution of the code. | ||
{{Important | Avoid using alternative shorthand syntax if you are planning on preparing your exception information dynamically, as it will have to be generated first regardless of the condition of the [[if]] statement before it, as shown in Example 3.}} |DESCRIPTION= | {{Important | Avoid using alternative shorthand syntax if you are planning on preparing your exception information dynamically, as it will have to be generated first regardless of the condition of the [[if]] statement before it, as shown in Example 3.}} |DESCRIPTION= | ||
|s1= [[throw]] expression |SYNTAX= | |s1= [[throw]] expression |SYNTAX= | ||
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|r2= [[Nothing]] |RETURNVALUE2= | |r2= [[Nothing]] |RETURNVALUE2= | ||
|x1= <code>[[try]] {[[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |EXAMPLE1= | |x1= <code>[[try]] {[[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |EXAMPLE1= | ||
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[[hint]] [[str]] _exception; | [[hint]] [[str]] _exception; | ||
};</code> |EXAMPLE3= | };</code> |EXAMPLE3= | ||
|seealso= [[Exception handling]], [[try]], [[catch]] | |seealso= [[Exception handling]], [[try]], [[catch]] | ||
Revision as of 03:59, 17 January 2021
Description
- Description:
- Throws an exception. The exception is processed by first catch block. This command will terminate further execution of the code.
- Groups:
- Program Flow
Syntax
Alternative Syntax
- Syntax:
- if (condition) throw exception Template:Since
- Parameters:
- if (condition): If Type - if (condition) returns true, "exception" is thrown
- exception: Anything - value that will be put into _exception variable inside catch block
- Return Value:
- Nothing
Examples
- Example 1:
try {throw "invalid argument"} catch {hint str _exception};- Example 2:
- Template:Since:
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 handlingtrycatch
Notes
-
Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note