Topic Path: Symbol Reference > Functions > iif Function (Boolean, Boolean, Boolean)
ContentsIndexHome
PreviousUpNext
iif Function
Collapse All

Derives a return value based on a conditional expression.

File

IdGlobal

Pascal
function iif(
    ATest: Boolean; 
    const ATrue: Boolean; 
    const AFalse: Boolean
): Boolean; overload;
Parameters
Parameters 
Description 
ATest 
Conditional expression to be tested.
 
ATrue 
Value to return when the expression is True.
 
AFalse 
Value to return when the expression is False. 
Returns

Boolean - Return value for the evaluated conditional expression.

Description

iif is a utility function that emulates the ternary operator found in C, C++, C#, and Java. 

iif is an overloaded function that provides return values specified in ATrue and AFalse based on the conditional test expression in ATest. When ATest evaluates to True, then the return value in ATrue is used. When ATest evaluates to False, then return value in AFalse is used. 

iif is overloaded to allow use of Integer, String, and Boolean return values.

Example
Copy Code
  sResult := iif(bCondition, 'True', 'False');
  iResult := iif(bCondition, 1, 0);
  bResult := iif(bCondition, True, False);
Copyright © 1993-2006, Chad Z. Hower (aka Kudzu) and the Indy Pit Crew. All rights reserved.
Post feedback to the Indy Docs Newsgroup.