throw: Difference between revisions
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Killzone Kid (talk | contribs) (stops script) |
m (template:command argument fix) |
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| 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. | ||
<br><br>'''NOTE''': 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.|= | <br><br>'''NOTE''': 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= | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
| '''throw''' expression |= | | '''throw''' expression |SYNTAX= | ||
|p1= expression: [[Anything]] |= | |p1= expression: [[Anything]] |PARAMETER1= | ||
| [[Nothing]] |= | | [[Nothing]] |RETURNVALUE= | ||
| s2= if (condition) '''throw''' exception (''Since Arma 3 v1.53.133045'') |= | | s2= if (condition) '''throw''' exception (''Since Arma 3 v1.53.133045'') |SYNTAX= | ||
|p21= if (condition): [[If Type]] - if (condition) returns [[true]], "exception" is thrown |= | |p21= if (condition): [[If Type]] - if (condition) returns [[true]], "exception" is thrown |PARAMETER1= | ||
|p22= exception: [[Anything]] - value that will be put into ''_exception'' variable inside [[catch]] block|= | |p22= exception: [[Anything]] - value that will be put into ''_exception'' variable inside [[catch]] block|PARAMETER1= | ||
| r2= [[Nothing]] |= | | r2= [[Nothing]] |RETURNVALUE= | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
|x1= <code>[[try]] {[[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |= | |x1= <code>[[try]] {[[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |EXAMPLE1= | ||
|x2= Since Arma 3 v1.53.133045: <code>123 [[try]] {[[if]] (_this != 123) [[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |= | |x2= Since Arma 3 v1.53.133045: <code>123 [[try]] {[[if]] (_this != 123) [[throw]] "invalid argument"} [[catch]] {[[hint]] [[str]] _exception};</code> |EXAMPLE1= | ||
|x3= The correct usage of shorthand alt syntax: <code>[[try]] { | |x3= The correct usage of shorthand alt syntax: <code>[[try]] { | ||
[[if]] (a > b) [[throw]] "Error: some error"; /// OK | [[if]] (a > b) [[throw]] "Error: some error"; /// OK | ||
| Line 58: | Line 58: | ||
____________________________________________________________________________________________ | ____________________________________________________________________________________________ | ||
| [[Exception handling]], [[try]], [[catch]] |= | | [[Exception handling]], [[try]], [[catch]] |SEEALSO= | ||
}} | }} | ||
Revision as of 15:50, 7 April 2019
Description
- Description:
- Throws an exception. The exception is processed by first catch block. This command will terminate further execution of the code.
NOTE: 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. - Groups:
- Uncategorised
Syntax
Alternative Syntax
- Syntax:
- if (condition) throw exception (Since Arma 3 v1.53.133045)
- 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:
- Since Arma 3 v1.53.133045:
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
-
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