XtScript: Conjunction - Logical Operators
Conjunction operator is used to to make the conditional operator in XtScript to be more effective.
We can create a conditional statement containing different arguments by chaining them using conjunction operator.
| XtScript Conjunction Operators | ||
|---|---|---|
| Operator | Syntax example | Summary |
| or | $a or $b | The condition is true either $a or $b return true |
| not | not $a | The condition is true if $a return false |
| not .. or | not $a or $b | The condition is true either $a return false or $b return true |
| not .. or not .. | not $a or not $b | The condition is true either $a or $b return false |
Quoted from syntax.xtgem.com:
There is NO if ... and ...
In Xtscripts if statement
Unlike in Javascript or PHP, XtScript doesn't have and as one of conjunction operator. We can use the not .. or not .. with else condition to simulate the "and".
Learn XtScript Conjunction Operators from examples
- Code:
<!--parser:xtscript--> var $food = Orange var $fruit1 = Watermelon var $fruit2 = Orange if $food == $fruit1 or $food == $fruit2 print You eat fruits. That's good and healthy else print Why you don't eat fruits? endif <!--/parser:xtscript-->
- Code:
<!--parser:xtscript--> var $number = 99 if not $number < 100 print \$number variable is more or equals to 100 else print \$number variable is less than 100 endif <!--/parser:xtscript-->- Result:
- Code:
<!--parser:xtscript--> var $mammals = cat var $bird = parrot var $pet = cat var $question = Do you have a mammals pet? if not $pet == $bird or $pet == $mammals print $question Yes, I have a $pet. It is a mammals else print $question No, I don't have a mammals pet endif <!--/parser:xtscript-->- Result:
- Code:
<!--parser:xtscript--> var $smartphone = 200 var $laptop = 700 var $money = 500 if not $money > 200 or not $money > 700 print <p>I have $money. I can not buy new smartphone and laptop at same time</p> else print <p>I have $money. I have enough money to buy new smartphone and laptop at same time</p> endif # Let's change the $money variable value var $money = 750 print <p>I just got a lottery! Now my money is $money</p> # Now $money variable has changed, let's redo the same if command with exact same conditions and arguments if not $money > 200 or not $money > 700 print <p>I have $money. I can not buy new smartphone and laptop at same time</p> else print <p>I have $money. I have enough money to buy new smartphone and laptop at same time</p> endif <!--/parser:xtscript-->- Result:
I have 500. I can not buy new smartphone and laptop at same time
I just got a lottery! Now my money is 750
I have 750. I have enough money to buy new smartphone and laptop at same time
At the not .. or not .. conditions above, we are indirectly simulate the "and" when the condition return false and it is reaching else stage. Here is the logical explanation:
• If if not $money > 200 or not $money > 700 condition return true, it means $money is less than 200 or less than 700.
• If if not $money > 200 or not $money > 700 condition return false, it will reaching else stage which means it is a condition where are arguments return false = $money is more than 200 and $money is more than 700.