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{{Command|Comments= | |||
____________________________________________________________________________________________ | |||
| arma |Game name= | |||
|gr1= Program Flow |GROUP1= | |||
|1.00|Game version= | |||
____________________________________________________________________________________________ | |||
| Processes code when an [[Exception handling|exception]] is thrown in a [[try]] block. The exception caught can be found in the ''_exception'' variable. |DESCRIPTION= | |||
____________________________________________________________________________________________ | |||
| tryBlock [[catch]] code |SYNTAX= | |||
[[ | |p1= tryBlock: [[Exception handling|Exception Type]] |PARAMETER1= | ||
|p2= code: [[Code]] |PARAMETER2= | |||
| [[Anything]] |RETURNVALUE= | |||
____________________________________________________________________________________________ | |||
|x1= <code>[[try]] {[[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |EXAMPLE1= | |||
|x2= {{since|arma3|1.53.133045}}: <code>123 [[try]] {[[if]] (_this != 123) [[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |EXAMPLE2= | |||
|x3= The correct usage of shorthand alt syntax: <code>[[try]] { | |||
[[if]] (a > b) [[throw]] "Error: some error"; {{cc|OK}} | |||
{{cc|The command argument is static}} | |||
} [[catch]] { | |||
[[hint]] [[str]] _exception; | |||
}; | |||
[[try]] { | |||
_someFunc = { | |||
..... | |||
}; | |||
[[if]] (a > b) [[throw]] ([[call]] _someFunc); {{cc|NOT OK}} | |||
{{cc|The command argument is dynamic}} | |||
{{cc|_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 | |||
{{cc|The command argument is dynamic}} | |||
{{cc|_someFunc is only called when (a > b) is [[true]]}} | |||
} [[catch]] { | |||
[[hint]] [[str]] _exception; | |||
};</code> |EXAMPLE3= | |||
| [[Exception handling]], [[try]], [[throw]] |SEEALSO= | |||
}} | |||
<h3 style="display:none">Notes</h3> | |||
<dl class="command_description"> | |||
<!-- Note Section BEGIN --> | |||
<!-- Note Section END --> | |||
</dl> | |||
<h3 style="display:none">Bottom Section</h3> | |||
[[Category:Scripting Commands|{{uc:{{PAGENAME}}}}]] | |||
[[Category:Scripting Commands Armed Assault|{{uc:{{PAGENAME}}}}]] | |||
[[Category:Scripting Commands Arma 2|{{uc:{{PAGENAME}}}}]] | |||
[[Category:Scripting Commands Arma 3|{{uc:{{PAGENAME}}}}]] | |||
[[Category:Scripting Commands Take On Helicopters|{{uc:{{PAGENAME}}}}]] | |||
Revision as of 11:10, 18 September 2020
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:
- 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 handlingtrythrow
Notes
-
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