assert: Difference between revisions

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[[Category:Scripting Commands|ASSERT]]
{{RV|type=command
[[Category:Scripting Commands ArmA|ASSERT]]


|game1= arma1
|version1= 1.00


<h2 style="color:#000066">''' assert ''condition'''''</h2>
|game2= arma2
|version2= 1.00


|game3= arma2oa
|version3= 1.50


'''Operand types:'''
|game4= tkoh
|version4= 1.00


'''condition:''' [[Boolean]]
|game5= arma3
|version5= 0.50


'''Type of returned value:'''
|gr1= Program Flow


[[Boolean]]
|descr= Tests a condition and if the condition is false, displays error on screen (if -showscripterrors enabled) and logs error into .rpt file. It does not interrupt the script execution.


'''Compatibility:'''
If script was pre-processed with [[preprocessFileLineNumbers]], it will also show/log the error line number and the file name.


Version 2.00 required.
|s1= [[assert]] condition


'''Description:'''
|p1= condition: [[Boolean]]


Tests a condition and if the condition is false, halts the program.
|r1= [[Boolean]] - mirrors condition


'''Example''':
|x1= <sqf>assert (1 > 2);</sqf>
   
 
'''assert''' (_x>0)
[[File:PreprocessFile.jpg]]
 
|x2= Check function params (Faster alternative to [[BIS_fnc_param]])
<sqf>
some_func = {
_0 = _this select 0;
_1 = _this select 1;
_2 = _this select 2;
if (!assert (
typeName _0 == "ARRAY" &&
typeName _1 == "STRING" &&
typeName _2 == "SCALAR"
)) exitWith { /* optional error logging */ };
hint "Alright!";
};
[1,2,3] call some_func; // assert error
[[1],"2",3] call some_func; // Alright!
</sqf>
 
|seealso= [[try]] [[catch]] [[throw]] [[halt]] [[diag_captureFrame]] [[diag_captureSlowFrame]] [[diag_logSlowFrame]]
}}
 
{{Note
|user= RoehrenRadio
|timestamp= 20100515000100
|text= Returns false, if condition is false, and returns true, if condition is true.
}}

Latest revision as of 11:49, 8 April 2024

Logo A1 black.png1.00Logo A2.png1.00A2 OA Logo.png1.50tkoh logo small.png1.00Arma 3 logo black.png0.50
Hover & click on the images for description

Description

Description:
Tests a condition and if the condition is false, displays error on screen (if -showscripterrors enabled) and logs error into .rpt file. It does not interrupt the script execution. If script was pre-processed with preprocessFileLineNumbers, it will also show/log the error line number and the file name.
Groups:
Program Flow

Syntax

Syntax:
assert condition
Parameters:
condition: Boolean
Return Value:
Boolean - mirrors condition

Examples

Example 1:
assert (1 > 2);
PreprocessFile.jpg
Example 2:
Check function params (Faster alternative to BIS_fnc_param)
some_func = { _0 = _this select 0; _1 = _this select 1; _2 = _this select 2; if (!assert ( typeName _0 == "ARRAY" && typeName _1 == "STRING" && typeName _2 == "SCALAR" )) exitWith { /* optional error logging */ }; hint "Alright!"; }; [1,2,3] call some_func; // assert error [[1],"2",3] call some_func; // Alright!

Additional Information

See also:
try catch throw halt diag_captureFrame diag_captureSlowFrame diag_logSlowFrame

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
RoehrenRadio - c
Posted on May 15, 2010 - 00:01 (UTC)
Returns false, if condition is false, and returns true, if condition is true.
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