Mega Code Archive

Making simple conditions easier to read and mantain

Title: Making simple conditions easier to read and mantain. Question: Make simple conditions easier to read and mantain. Answer: Sometimes you have conditions like IF condition THEN Result := what_ever ELSE Result := something; Or, even worst, sometimes you have several conditions, like IF condition1 THEN Result1 := what_ever1 ELSE Result1 := something1; IF condition2 THEN Result2 := what_ever2 ELSE Result2 := something2; ... IF conditionN THEN ResultN := what_everN ELSE ResultN := somethingN; Woundt it be much easy to write something like Result := IFF(condition, result_when_condition_is_true , result_when_condition_is_false); ? What I propose here is a simple function that will reduce simple conditions into a single line, by receiving a condition and the values to return when the condition is true or false. Function IFF(C: Boolean; T,F: Variant): Variant; Begin If C Then Result := T Else Result := F; End; Since the variables are variant type, you can pass any data type you want, like in these examples: // will return 'Correct', since the condition is true MyStr = IFF(TRUE, 'Correct', 'Incorrect'); // will return 'Incorrect', since the condition is false MyStr = IFF(TALSE, 'Correct', 'Incorrect'); // will return X if X Y, otherwise returns Y MyInt = IFF( X Y, X, Y); // will return TRUE, since TRUE or FALSE is TRUE MyBool = IFF((TRUE OR FALSE), TRUE, FALSE); // will return 0, since TRUE and FALSE is FALSE MyInt = IFF((TRUE AND FALSE), 1, 0); // is MyStr has a lenght grater then 0, returns its lenght, otherwise returns 0 MyInt = IFF(Lenght(MyStr) 0, Lenght(MyStr), 0); // if 'Address:' is present on MyStr, it will return the lenght of the string, otherwise will return the string 'Not Found!' MyVar = IFF(Pos('Address:',MyStr) 0, Length(MyStr), 'Not found!'); // if x is smaller or equal to 1, it returns X, otherwise it returns the multiplication of X by its predecessor MyInt = IFF(X I've been using this funtion for a while and noticed that the code is easier to read and maintain. Hope it helps you to.